Fossil Fuel Emissions (ppm/year)
Year    Appear Disappear
1960     0.894     0.318
1961     0.664     0.553
1962     0.704     0.563
1963     0.654     0.682
1964     0.574     0.838
1965     0.585     0.892
1966     1.365     0.186
1967     0.725     0.876
1968     0.735     0.947
1969     1.195     0.588
1970     1.316     0.596
1971     0.886     1.099
1972     1.036     1.028
1973     1.987     0.190
1974     0.787     1.394
1975     1.157     1.011
1976     0.567     1.727
1977     1.817     0.549
1978     1.697     0.696
1979     1.438     1.089
1980     2.068     0.433
1981     1.207     1.216
1982     0.757     1.646
1983     1.677     0.717
1984     1.548     0.933
1985     1.478     1.077
1986     1.438     1.195
1987     1.718     0.982
1988     2.489     0.311
1989     1.639     1.222
1990     1.279     1.576
1991     1.339     1.548
1992     0.709     2.140
1993     0.749     2.124
1994     1.509     1.385
1995     1.849     1.109
1996     1.769     1.265
1997     1.120     1.947
1998     2.669     0.393
1999     2.100     1.032
2000     1.180     2.032
2001     1.630     1.605
2002     2.010     1.305
2003     2.571     0.929
2004     1.821     1.803
2005     2.042     1.728
2006     2.182     1.711
2007     1.762     2.230
2008     2.132     1.953
2009     1.492     2.535
2010     2.273     1.974
2011     1.883     2.499
2012     2.034     2.440
2013     2.764     1.750
2014     1.954     2.588
2015     2.324     2.223
2016     3.434     1.151
2017     2.164     2.483
2018     2.405     2.365
2019     2.485     2.315
2020     2.374     2.207
2021     2.285     2.536
2022     2.375     2.476