Year	kt of CO2 equivalent
1970	12.2052
1971	12.5119
1972	12.8929
1973	13.3732
1974	13.7552
1975	14.2026
1976	14.6307
1977	15.4674
1978	15.6787
1979	16.0605
1980	16.7495
1981	17.5631
1982	18.1124
1983	22.0187
1984	14.9408
1985	14.8227
1986	15.2839
1987	15.5447
1988	16.106
1989	16.5162
1990	17.5904
1991	17.7291
1992	18.2246
1993	18.658
1994	19.3206
1995	19.8684
1996	20.3431
1997	20.6478
1998	21.1306
1999	21.7186
2000	22.2267
2001	22.6983
2002	23.1942
2003	23.6308
2004	24.1004
2005	24.5612
2006	25.1067
2007	25.8743
2008	26.7298
2009	27.2527
2010	28.1596
2011	28.441196
2012	28.722792