| Year | CO2 | CH4 | N2O |
|---|---|---|---|
| 1750 | 278.0 | 700.0 | 270.0 |
| 1755 | 278.0 | 702.23 | 270.3 |
| 1760 | 278.0 | 704.45 | 270.6 |
| 1765 | 278.0 | 708.48 | 270.9 |
| 1770 | 278.6 | 712.5 | 271.2 |
| 1775 | 279.3 | 717.76 | 271.5 |
| 1780 | 280.1 | 723.03 | 271.8 |
| 1785 | 280.8 | 728.96 | 272.1 |
| 1790 | 281.6 | 734.9 | 272.4 |
| 1795 | 282.3 | 738.25 | 272.7 |
| 1800 | 282.9 | 741.6 | 273.0 |
| 1805 | 283.4 | 746.2 | 273.24 |
| 1810 | 283.8 | 750.8 | 273.48 |
| 1815 | 284.0 | 755.55 | 273.72 |
| 1820 | 284.2 | 760.3 | 273.96 |
| 1825 | 284.3 | 765.05 | 274.2 |
| 1830 | 284.4 | 769.8 | 274.44 |
| 1835 | 283.8 | 774.6 | 274.68 |
| 1840 | 283.4 | 779.4 | 274.92 |
| 1845 | 283.9 | 785.5 | 275.16 |
| 1850 | 284.7 | 791.6 | 275.4 |
| 1855 | 285.4 | 798.6 | 275.9 |
| 1860 | 286.2 | 805.6 | 276.4 |
| 1865 | 286.9 | 813.3 | 276.9 |
| 1870 | 287.5 | 821.0 | 277.4 |
| 1875 | 288.7 | 829.05 | 277.8 |
| 1880 | 290.7 | 837.1 | 278.2 |
| 1885 | 293.0 | 846.85 | 278.7 |
| 1890 | 294.2 | 856.6 | 279.1 |
| 1895 | 294.8 | 868.0 | 279.5 |
| 1900 | 295.8 | 879.4 | 279.8 |
| 1905 | 297.6 | 900.9 | 280.3 |
| 1910 | 299.7 | 924.0 | 281.0 |
| 1915 | 301.4 | 949.7 | 281.8 |
| 1920 | 303.0 | 978.1 | 282.9 |
| 1925 | 305.0 | 1007.7 | 284.0 |
| 1930 | 307.2 | 1036.2 | 285.0 |
| 1935 | 309.4 | 1063.35 | 285.9 |
| 1940 | 310.4 | 1088.9 | 286.7 |
| 1945 | 310.1 | 1115.0 | 287.8 |
| 1950 | 310.7 | 1147.5 | 289.0 |
| 1955 | 313.0 | 1192.25 | 290.1 |
| 1960 | 316.9 | 1247.5 | 291.4 |
| 1965 | 320.0 | 1312.2 | 292.9 |
| 1970 | 325.0 | 1386.0 | 294.9 |
| 1975 | 331.3 | 1465.4 | 297.4 |
| 1978 | 334.6 | 1514.0 | 298.82 |
| 1979 | 336.74 | 1530.55 | 300.04 |
| 1980 | 338.7 | 1547.1 | 300.65 |
| 1981 | 339.74 | 1567.5 | 301.23 |
| 1982 | 340.92 | 1587.9 | 303.56 |
| 1983 | 342.47 | 1608.29 | 303.78 |
| 1984 | 344.13 | 1628.69 | 304.02 |
| 1985 | 345.47 | 1649.09 | 304.54 |
| 1986 | 346.89 | 1669.49 | 305.37 |
| 1987 | 348.46 | 1680.66 | 305.55 |
| 1988 | 350.93 | 1698.83 | 306.49 |
| 1989 | 352.57 | 1710.52 | 307.48 |
| 1990 | 353.72 | 1709.33 | 308.78 |
| 1991 | 355.15 | 1729.07 | 309.57 |
| 1992 | 355.9 | 1731.05 | 310.0 |
| 1993 | 356.63 | 1735.65 | 310.25 |
| 1994 | 358.2 | 1741.66 | 310.98 |
| 1995 | 360.23 | 1747.1 | 311.78 |
| 1996 | 362.01 | 1749.62 | 312.74 |
| 1997 | 363.17 | 1754.01 | 313.39 |
| 1998 | 365.69 | 1763.01 | 313.98 |
| 1999 | 367.81 | 1772.84 | 314.83 |
| 2000 | 368.92 | 1774.43 | 315.83 |
| 2001 | 370.51 | 1773.29 | 316.59 |
| 2002 | 372.49 | 1773.47 | 317.2 |
| 2003 | 375.08 | 1777.55 | 317.88 |
| 2004 | 376.61 | 1775.31 | 318.49 |
| 2005 | 378.97 | 1774.58 | 319.21 |
| 2006 | 381.17 | 1775.56 | 319.9 |
| 2007 | 382.89 | 1781.68 | 320.64 |
| 2008 | 384.98 | 1789.89 | 321.57 |
| 2009 | 386.42 | 1793.6 | 322.26 |
| 2010 | 388.71 | 1796.86 | 323.05 |
| 2011 | 390.57 | 1803.47 | 323.99 |