Year	kt of CO2 equivalent
1970	13.0733582
1971	13.2473257
1972	13.448115
1973	13.6753294
1974	13.9088347
1975	14.192873
1976	14.3835222
1977	14.6498031
1978	14.7537624
1979	14.9500365
1980	15.4709087
1981	16.5597081
1982	16.0547171
1983	16.7070476
1984	17.3836372
1985	18.0264089
1986	18.6707899
1987	19.3524242
1988	20.0081174
1989	20.7495349
1990	20.3813783
1991	20.9670057
1992	21.5104445
1993	21.9988903
1994	22.4541277
1995	22.8843444
1996	23.263078
1997	23.6153334
1998	23.9290422
1999	31.135678
2000	47.656033
2001	50.883203
2002	51.34821
2003	51.838339
2004	52.320385
2005	52.801179
2006	53.30204
2007	53.913983
2008	54.616323
2009	54.9893494063012
2010	56.6374866017899
2011	57.7435092847854
2012	58.7655192902151