Year	kt of CO2 equivalent
1970	40.177074
1971	38.320182
1972	39.946506
1973	41.705609
1974	42.0724455
1975	44.0453899
1976	43.6237358
1977	45.7725378
1978	47.8332764
1979	49.7354901
1980	51.1198351
1981	52.7779396
1982	53.5306688
1983	55.2394511
1984	56.3446434
1985	57.2635875
1986	58.4247229
1987	59.7245072
1988	61.3722072
1989	59.5164813
1990	60.1849157
1991	61.4934162
1992	62.9747314
1993	64.4612187
1994	65.8566316
1995	67.2026511
1996	68.4943945
1997	69.7976531
1998	66.967334
1999	68.2443397
2000	69.55195
2001	70.8618956
2002	72.248862
2003	73.5058179
2004	74.8363805
2005	76.0846518
2006	77.3803765
2007	78.7497834
2008	80.2123132
2009	81.4806286961758
2010	83.6212456391392
2011	84.7696534428198
2012	85.8694584981447