Sulphur dioxide and coal, annual growth rate in Tokelau
Tokelau: Sulphur dioxide and coal, annual growth rate was 0 % change on previous year in 2022. ◆ Volatile
Sulphur dioxide and coal, annual growth rate in Tokelau, 1751–2022
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
In 2022, sulphur dioxide and coal, annual growth rate in Tokelau stood at 0 % change on previous year.
That represents a change of up 100.0% on the previous year and down 100.0% over ten years.
Over the whole period, sulphur dioxide and coal, annual growth rate in Tokelau peaked at 15.84 % change on previous year in 1990 and was at its lowest, -8.3 % change on previous year, in 2000.
That places Tokelau 145th out of 219 countries with data for 2022, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Sulphur dioxide and coal, annual growth rate in Tokelau, year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1751 | 0.5263 % change on previous year | — |
| 1752 | 0.5236 % change on previous year | -0.5% |
| 1753 | 0.5209 % change on previous year | -0.5% |
| 1754 | 0.5182 % change on previous year | -0.5% |
| 1755 | 0.5155 % change on previous year | -0.5% |
| 1756 | 0.5129 % change on previous year | -0.5% |
| 1757 | 0.5102 % change on previous year | -0.5% |
| 1758 | 0.5076 % change on previous year | -0.5% |
| 1759 | 0.5048 % change on previous year | -0.6% |
| 1760 | 0.5025 % change on previous year | -0.4% |
| 1761 | 0.5263 % change on previous year | +4.7% |
| 1762 | 0.5236 % change on previous year | -0.5% |
| 1763 | 0.5209 % change on previous year | -0.5% |
| 1764 | 0.5182 % change on previous year | -0.5% |
| 1765 | 0.5155 % change on previous year | -0.5% |
| 1766 | 0.5128 % change on previous year | -0.5% |
| 1767 | 0.5102 % change on previous year | -0.5% |
| 1768 | 0.5076 % change on previous year | -0.5% |
| 1769 | 0.5051 % change on previous year | -0.5% |
| 1770 | 0.5025 % change on previous year | -0.5% |
| 1771 | 0.5263 % change on previous year | +4.7% |
| 1772 | 0.5233 % change on previous year | -0.6% |
| 1773 | 0.5209 % change on previous year | -0.5% |
| 1774 | 0.5182 % change on previous year | -0.5% |
| 1775 | 0.5155 % change on previous year | -0.5% |
| 1776 | 0.5129 % change on previous year | -0.5% |
| 1777 | 0.5102 % change on previous year | -0.5% |
| 1778 | 0.5076 % change on previous year | -0.5% |
| 1779 | 0.5051 % change on previous year | -0.5% |
| 1780 | 0.5023 % change on previous year | -0.6% |
| 1781 | 0.5263 % change on previous year | +4.8% |
| 1782 | 0.5236 % change on previous year | -0.5% |
| 1783 | 0.5208 % change on previous year | -0.5% |
| 1784 | 0.5181 % change on previous year | -0.5% |
| 1785 | 0.5155 % change on previous year | -0.5% |
| 1786 | 0.5128 % change on previous year | -0.5% |
| 1787 | 0.5102 % change on previous year | -0.5% |
| 1788 | 0.5076 % change on previous year | -0.5% |
| 1789 | 0.5051 % change on previous year | -0.5% |
| 1790 | 0.5025 % change on previous year | -0.5% |
| 1791 | 0.5264 % change on previous year | +4.8% |
| 1792 | 0.5234 % change on previous year | -0.6% |
| 1793 | 0.521 % change on previous year | -0.5% |
| 1794 | 0.518 % change on previous year | -0.6% |
| 1795 | 0.5156 % change on previous year | -0.5% |
| 1796 | 0.5127 % change on previous year | -0.6% |
| 1797 | 0.5103 % change on previous year | -0.5% |
| 1798 | 0.5075 % change on previous year | -0.6% |
| 1799 | 0.5052 % change on previous year | -0.5% |
| 1800 | 0.5024 % change on previous year | -0.5% |
| 1801 | 0.5264 % change on previous year | +4.8% |
| 1802 | 0.5236 % change on previous year | -0.5% |
| 1803 | 0.5207 % change on previous year | -0.6% |
| 1804 | 0.5182 % change on previous year | -0.5% |
| 1805 | 0.5155 % change on previous year | -0.5% |
| 1806 | 0.5129 % change on previous year | -0.5% |
| 1807 | 0.51 % change on previous year | -0.6% |
| 1808 | 0.5077 % change on previous year | -0.5% |
| 1809 | 0.5051 % change on previous year | -0.5% |
| 1810 | 0.5026 % change on previous year | -0.5% |
| 1811 | 0.5554 % change on previous year | +10.5% |
| 1812 | 0.5526 % change on previous year | -0.5% |
| 1813 | 0.5493 % change on previous year | -0.6% |
| 1814 | 0.5465 % change on previous year | -0.5% |
| 1815 | 0.5436 % change on previous year | -0.5% |
| 1816 | 0.5404 % change on previous year | -0.6% |
| 1817 | 0.5377 % change on previous year | -0.5% |
| 1818 | 0.5346 % change on previous year | -0.6% |
| 1819 | 0.532 % change on previous year | -0.5% |
| 1820 | 0.5292 % change on previous year | -0.5% |
| 1821 | 0.5554 % change on previous year | +5.0% |
| 1822 | 0.5526 % change on previous year | -0.5% |
| 1823 | 0.5493 % change on previous year | -0.6% |
| 1824 | 0.5465 % change on previous year | -0.5% |
| 1825 | 0.5436 % change on previous year | -0.5% |
| 1826 | 0.5404 % change on previous year | -0.6% |
| 1827 | 0.5377 % change on previous year | -0.5% |
| 1828 | 0.5348 % change on previous year | -0.5% |
| 1829 | 0.5318 % change on previous year | -0.6% |
| 1830 | 0.5292 % change on previous year | -0.5% |
| 1831 | 0.5555 % change on previous year | +5.0% |
| 1832 | 0.5526 % change on previous year | -0.5% |
| 1833 | 0.5494 % change on previous year | -0.6% |
| 1834 | 0.5465 % change on previous year | -0.5% |
| 1835 | 0.5434 % change on previous year | -0.6% |
| 1836 | 0.5406 % change on previous year | -0.5% |
| 1837 | 0.5375 % change on previous year | -0.6% |
| 1838 | 0.5349 % change on previous year | -0.5% |
| 1839 | 0.5318 % change on previous year | -0.6% |
| 1840 | 0.5292 % change on previous year | -0.5% |
| 1841 | 0.5554 % change on previous year | +5.0% |
| 1842 | 0.5526 % change on previous year | -0.5% |
| 1843 | 0.5495 % change on previous year | -0.5% |
| 1844 | 0.5463 % change on previous year | -0.6% |
| 1845 | 0.5435 % change on previous year | -0.5% |
| 1846 | 0.5406 % change on previous year | -0.5% |
| 1847 | 0.5375 % change on previous year | -0.6% |
| 1848 | 0.5348 % change on previous year | -0.5% |
| 1849 | 0.532 % change on previous year | -0.5% |
| 1850 | 0.529 % change on previous year | -0.6% |
| 1851 | 0.5556 % change on previous year | +5.0% |
| 1852 | 0.5524 % change on previous year | -0.6% |
| 1853 | 0.5495 % change on previous year | -0.5% |
| 1854 | 0.5464 % change on previous year | -0.6% |
| 1855 | 0.5436 % change on previous year | -0.5% |
| 1856 | 0.5405 % change on previous year | -0.6% |
| 1857 | 0.5377 % change on previous year | -0.5% |
| 1858 | 0.5347 % change on previous year | -0.6% |
| 1859 | 0.532 % change on previous year | -0.5% |
| 1860 | 0.529 % change on previous year | -0.6% |
| 1861 | 0.3449 % change on previous year | -34.8% |
| 1862 | 0.3437 % change on previous year | -0.3% |
| 1863 | 0.3425 % change on previous year | -0.3% |
| 1864 | 0.3412 % change on previous year | -0.4% |
| 1865 | 0.3402 % change on previous year | -0.3% |
| 1866 | 0.339 % change on previous year | -0.3% |
| 1867 | 0.3379 % change on previous year | -0.3% |
| 1868 | 0.3367 % change on previous year | -0.3% |
| 1869 | 0.3354 % change on previous year | -0.4% |
| 1870 | 0.3345 % change on previous year | -0.3% |
| 1871 | 0.3448 % change on previous year | +3.1% |
| 1872 | 0.3436 % change on previous year | -0.3% |
| 1873 | 0.3425 % change on previous year | -0.3% |
| 1874 | 0.3413 % change on previous year | -0.3% |
| 1875 | 0.3401 % change on previous year | -0.3% |
| 1876 | 0.339 % change on previous year | -0.3% |
| 1877 | 0.3378 % change on previous year | -0.3% |
| 1878 | 0.3367 % change on previous year | -0.3% |
| 1879 | 0.3356 % change on previous year | -0.3% |
| 1880 | 0.3345 % change on previous year | -0.3% |
| 1881 | 0.3449 % change on previous year | +3.1% |
| 1882 | 0.3435 % change on previous year | -0.4% |
| 1883 | 0.3425 % change on previous year | -0.3% |
| 1884 | 0.3412 % change on previous year | -0.4% |
| 1885 | 0.3402 % change on previous year | -0.3% |
| 1886 | 0.339 % change on previous year | -0.3% |
| 1887 | 0.3377 % change on previous year | -0.4% |
| 1888 | 0.3368 % change on previous year | -0.3% |
| 1889 | 0.3356 % change on previous year | -0.3% |
| 1890 | 0.3344 % change on previous year | -0.4% |
| 1891 | 0.3449 % change on previous year | +3.1% |
| 1892 | 0.3437 % change on previous year | -0.3% |
| 1893 | 0.3425 % change on previous year | -0.3% |
| 1894 | 0.3413 % change on previous year | -0.3% |
| 1895 | 0.34 % change on previous year | -0.4% |
| 1896 | 0.339 % change on previous year | -0.3% |
| 1897 | 0.3379 % change on previous year | -0.3% |
| 1898 | 0.3367 % change on previous year | -0.3% |
| 1899 | 0.3356 % change on previous year | -0.3% |
| 1900 | 0.3345 % change on previous year | -0.3% |
| 1901 | 11.04 % change on previous year | +3199.8% |
| 1902 | 10.01 % change on previous year | -9.3% |
| 1903 | 9.16 % change on previous year | -8.5% |
| 1904 | 8.44 % change on previous year | -7.8% |
| 1905 | 7.84 % change on previous year | -7.2% |
| 1906 | 7.31 % change on previous year | -6.7% |
| 1907 | 6.86 % change on previous year | -6.2% |
| 1908 | 6.46 % change on previous year | -5.8% |
| 1909 | 6.11 % change on previous year | -5.5% |
| 1910 | 5.79 % change on previous year | -5.2% |
| 1911 | 5.43 % change on previous year | -6.3% |
| 1912 | 5.17 % change on previous year | -4.7% |
| 1913 | 4.94 % change on previous year | -4.5% |
| 1914 | 4.73 % change on previous year | -4.2% |
| 1915 | 4.54 % change on previous year | -4.1% |
| 1916 | 4.36 % change on previous year | -3.9% |
| 1917 | 4.2 % change on previous year | -3.7% |
| 1918 | 4.05 % change on previous year | -3.6% |
| 1919 | 3.91 % change on previous year | -3.4% |
| 1920 | 3.78 % change on previous year | -3.3% |
| 1921 | 4.46 % change on previous year | +17.9% |
| 1922 | 4.29 % change on previous year | -3.8% |
| 1923 | 4.13 % change on previous year | -3.7% |
| 1924 | 3.99 % change on previous year | -3.5% |
| 1925 | 3.85 % change on previous year | -3.4% |
| 1926 | 3.73 % change on previous year | -3.3% |
| 1927 | 3.61 % change on previous year | -3.1% |
| 1928 | 3.5 % change on previous year | -3.0% |
| 1929 | 3.4 % change on previous year | -2.9% |
| 1930 | 3.3 % change on previous year | -2.8% |
| 1931 | 3.22 % change on previous year | -2.5% |
| 1932 | 3.13 % change on previous year | -2.7% |
| 1933 | 3.05 % change on previous year | -2.6% |
| 1934 | 2.98 % change on previous year | -2.5% |
| 1935 | 2.9 % change on previous year | -2.4% |
| 1936 | 2.83 % change on previous year | -2.4% |
| 1937 | 2.77 % change on previous year | -2.3% |
| 1938 | 2.71 % change on previous year | -2.3% |
| 1939 | 2.65 % change on previous year | -2.2% |
| 1940 | 3.04 % change on previous year | +14.7% |
| 1941 | 2.97 % change on previous year | -2.3% |
| 1942 | 2.89 % change on previous year | -2.4% |
| 1943 | 2.83 % change on previous year | -2.4% |
| 1944 | 2.76 % change on previous year | -2.3% |
| 1945 | 2.7 % change on previous year | -2.2% |
| 1946 | 2.64 % change on previous year | -2.2% |
| 1947 | 2.58 % change on previous year | -2.1% |
| 1948 | 2.53 % change on previous year | -2.1% |
| 1949 | 2.48 % change on previous year | -2.0% |
| 1950 | 2.43 % change on previous year | -2.0% |
| 1951 | -1.38 % change on previous year | -157.0% |
| 1952 | 1.28 % change on previous year | -192.1% |
| 1953 | 3.26 % change on previous year | +155.8% |
| 1954 | 4.55 % change on previous year | +39.4% |
| 1955 | 5.23 % change on previous year | +15.0% |
| 1956 | 5.47 % change on previous year | +4.6% |
| 1957 | 5.37 % change on previous year | -1.7% |
| 1958 | 5.1 % change on previous year | -5.0% |
| 1959 | 4.68 % change on previous year | -8.3% |
| 1960 | 4.29 % change on previous year | -8.3% |
| 1961 | 3.48 % change on previous year | -18.9% |
| 1962 | 1.45 % change on previous year | -58.2% |
| 1963 | 0.538 % change on previous year | -63.0% |
| 1964 | -0.3692 % change on previous year | -168.6% |
| 1965 | -1.52 % change on previous year | +312.3% |
| 1966 | -2.79 % change on previous year | +83.4% |
| 1967 | -3.84 % change on previous year | +37.5% |
| 1968 | -4.17 % change on previous year | +8.6% |
| 1969 | -4.52 % change on previous year | +8.5% |
| 1970 | -4.5 % change on previous year | -0.4% |
| 1971 | -4.77 % change on previous year | +6.0% |
| 1972 | -4.31 % change on previous year | -9.7% |
| 1973 | -3.28 % change on previous year | -23.9% |
| 1974 | -3.01 % change on previous year | -8.2% |
| 1975 | -3.34 % change on previous year | +10.9% |
| 1976 | -3.39 % change on previous year | +1.7% |
| 1977 | -3.49 % change on previous year | +2.7% |
| 1978 | -3.18 % change on previous year | -8.8% |
| 1979 | -2.4 % change on previous year | -24.7% |
| 1980 | -1.82 % change on previous year | -24.0% |
| 1981 | -1.02 % change on previous year | -43.7% |
| 1982 | -0.5329 % change on previous year | -48.0% |
| 1983 | -0.2407 % change on previous year | -54.8% |
| 1984 | -0.9986 % change on previous year | +314.9% |
| 1985 | -0.478 % change on previous year | -52.1% |
| 1986 | -2.7 % change on previous year | +464.8% |
| 1987 | -3.65 % change on previous year | +35.0% |
| 1988 | -4.66 % change on previous year | +27.9% |
| 1989 | -5.24 % change on previous year | +12.5% |
| 1990 | 15.84 % change on previous year | -401.9% |
| 1991 | -5.44 % change on previous year | -134.3% |
| 1992 | -5.37 % change on previous year | -1.2% |
| 1993 | -4.94 % change on previous year | -8.0% |
| 1994 | -4.25 % change on previous year | -14.0% |
| 1995 | -7.2 % change on previous year | +69.4% |
| 1996 | -2.28 % change on previous year | -68.3% |
| 1997 | -0.872 % change on previous year | -61.8% |
| 1998 | -0.621 % change on previous year | -28.8% |
| 1999 | -0.1676 % change on previous year | -73.0% |
| 2000 | -8.3 % change on previous year | +4851.6% |
| 2001 | -4.53 % change on previous year | -45.4% |
| 2002 | -5.11 % change on previous year | +12.7% |
| 2003 | -6.84 % change on previous year | +33.9% |
| 2004 | -6.59 % change on previous year | -3.6% |
| 2005 | -5.86 % change on previous year | -11.2% |
| 2006 | -4.18 % change on previous year | -28.7% |
| 2007 | -3.41 % change on previous year | -18.4% |
| 2008 | -1.94 % change on previous year | -42.9% |
| 2009 | -1.17 % change on previous year | -39.8% |
| 2010 | -0.487 % change on previous year | -58.4% |
| 2011 | 0.319 % change on previous year | -165.5% |
| 2012 | 0.7988 % change on previous year | +150.4% |
| 2013 | 3.53 % change on previous year | +341.4% |
| 2014 | 1.69 % change on previous year | -52.0% |
| 2015 | -0.04 % change on previous year | -102.4% |
| 2016 | -0.3354 % change on previous year | +738.1% |
| 2017 | 0.2102 % change on previous year | -162.7% |
| 2018 | 0.0004 % change on previous year | -99.8% |
| 2019 | 0.126 % change on previous year | +28199.8% |
| 2020 | -0.0854 % change on previous year | -167.8% |
| 2021 | -0.0418 % change on previous year | -51.0% |
| 2022 | 0 % change on previous year | -100.0% |
Biggest year-on-year movements
Years where Sulphur dioxide and coal, annual growth rate in Tokelau changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2019 | +28199.8% | 0.0004 % change on previous year | 0.126 % change on previous year |
| 2000 | -4851.6% | -0.1676 % change on previous year | -8.3 % change on previous year |
| 1901 | +3199.8% | 0.3345 % change on previous year | 11.04 % change on previous year |
| 2016 | -738.1% | -0.04 % change on previous year | -0.3354 % change on previous year |
| 1986 | -464.8% | -0.478 % change on previous year | -2.7 % change on previous year |
| 1990 | +401.9% | -5.24 % change on previous year | 15.84 % change on previous year |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1750s | 0.5156 % change on previous year | 0.5048 % change on previous year | 0.5263 % change on previous year | 9 |
| 1760s | 0.5143 % change on previous year | 0.5025 % change on previous year | 0.5263 % change on previous year | 10 |
| 1770s | 0.5143 % change on previous year | 0.5025 % change on previous year | 0.5263 % change on previous year | 10 |
| 1780s | 0.5142 % change on previous year | 0.5023 % change on previous year | 0.5263 % change on previous year | 10 |
| 1790s | 0.5143 % change on previous year | 0.5025 % change on previous year | 0.5264 % change on previous year | 10 |
| 1800s | 0.5142 % change on previous year | 0.5024 % change on previous year | 0.5264 % change on previous year | 10 |
| 1810s | 0.5395 % change on previous year | 0.5026 % change on previous year | 0.5554 % change on previous year | 10 |
| 1820s | 0.5421 % change on previous year | 0.5292 % change on previous year | 0.5554 % change on previous year | 10 |
| 1830s | 0.5421 % change on previous year | 0.5292 % change on previous year | 0.5555 % change on previous year | 10 |
| 1840s | 0.5422 % change on previous year | 0.5292 % change on previous year | 0.5554 % change on previous year | 10 |
| 1850s | 0.5421 % change on previous year | 0.529 % change on previous year | 0.5556 % change on previous year | 10 |
| 1860s | 0.359 % change on previous year | 0.3354 % change on previous year | 0.529 % change on previous year | 10 |
| 1870s | 0.3396 % change on previous year | 0.3345 % change on previous year | 0.3448 % change on previous year | 10 |
| 1880s | 0.3396 % change on previous year | 0.3345 % change on previous year | 0.3449 % change on previous year | 10 |
| 1890s | 0.3396 % change on previous year | 0.3344 % change on previous year | 0.3449 % change on previous year | 10 |
| 1900s | 7.36 % change on previous year | 0.3345 % change on previous year | 11.04 % change on previous year | 10 |
| 1910s | 4.71 % change on previous year | 3.91 % change on previous year | 5.79 % change on previous year | 10 |
| 1920s | 3.87 % change on previous year | 3.4 % change on previous year | 4.46 % change on previous year | 10 |
| 1930s | 2.95 % change on previous year | 2.65 % change on previous year | 3.3 % change on previous year | 10 |
| 1940s | 2.74 % change on previous year | 2.48 % change on previous year | 3.04 % change on previous year | 10 |
| 1950s | 3.6 % change on previous year | -1.38 % change on previous year | 5.47 % change on previous year | 10 |
| 1960s | -0.745 % change on previous year | -4.52 % change on previous year | 4.29 % change on previous year | 10 |
| 1970s | -3.57 % change on previous year | -4.77 % change on previous year | -2.4 % change on previous year | 10 |
| 1980s | -2.13 % change on previous year | -5.24 % change on previous year | -0.2407 % change on previous year | 10 |
| 1990s | -1.53 % change on previous year | -7.2 % change on previous year | 15.84 % change on previous year | 10 |
| 2000s | -4.79 % change on previous year | -8.3 % change on previous year | -1.17 % change on previous year | 10 |
| 2010s | 0.5811 % change on previous year | -0.487 % change on previous year | 3.53 % change on previous year | 10 |
| 2020s | -0.0424 % change on previous year | -0.0854 % change on previous year | 0 % change on previous year | 3 |
Countries ranked near Tokelau
- 142 Myanmar 0.2909 % change on previous year compare
- 143 Nepal 0.166 % change on previous year compare
- 144 Bahamas 0.1369 % change on previous year compare
- 145 Faroe Islands 0 % change on previous year compare
- 145 Greenland 0 % change on previous year compare
- 145 Liechtenstein 0 % change on previous year compare
- 145 Western Sahara 0 % change on previous year compare
More energy & mining data for Tokelau
- Coal consumption and sulphur dioxide emissions 0.2245 tonnes (2022)
- Electricity Installed Capacity, Megawatt 0.144 (2023)
- Country position on nuclear weapons 0 (2023)
- Installed solar energy capacity 0.001 gigawatts (2025)
- Electricity Generation, Gigawatt hours 0.105 (2022)
- International finance received for clean energy 2.42 million millions of constant united states dollars (2024)
- Installed wind energy capacity 0 gigawatts (2025)
- Renewable electricity-generating capacity per person 413.01 watts per capita (2024)
- International financial flows to developing countries in support of 2.42 (2024)
- Installed renewable electricity-generating capacity 413.01 (2024)
Frequently asked questions
- What is sulphur dioxide and coal, annual growth rate in Tokelau?
- Sulphur dioxide and coal, annual growth rate in Tokelau was 0 % change on previous year in 2022, according to Statizoid (derived).
- What is the highest sulphur dioxide and coal, annual growth rate recorded in Tokelau?
- The highest recorded value was 15.84 % change on previous year in 1990.
- What is the lowest sulphur dioxide and coal, annual growth rate recorded in Tokelau?
- The lowest recorded value was -8.3 % change on previous year in 2000.
- How does Tokelau rank for sulphur dioxide and coal, annual growth rate?
- Tokelau ranks 145th out of 219 countries with data for 2022.
- Is sulphur dioxide and coal, annual growth rate rising or falling in Tokelau?
- Over the last ten years it is down 100.0%. The long-run trend across the full record is volatile.
- Where does this Tokelau data come from?
- The figures come from Statizoid (derived), published as part of Sulphur dioxide and coal, annual growth rate. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 272 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
The year-on-year percentage change in Sulphur dioxide and coal. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.
Computed from
- Coal consumption and sulphur dioxide emissions Hoesly et al. (2024) – Community Emissions Data System (CEDS) – with major processing by Our World in Data
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
The year-on-year percentage change in Sulphur dioxide and coal. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.