Year	thousand metric tons of CO2 equivalent
1990	18109.9299
1991	12982.35332
1992	13303.14036
1993	13135.53289
1994	11682.3434
1995	11826.71085
1996	11849.639
1997	11386.08923
1998	10400.90702
1999	9760.545866
2000	10557.42359
2001	10291.64981
2002	9323.352531
2003	9944.591821
2004	11090.02535
2005	11169.86039
2006	10146.65456
2007	10177.58705
2008	9269.971672
2009	8713.855982
2010	9231.75149
2011	9151.693593
2012	8417.737466
2013	8621.246574
2014	8346.458876
2015	8567.147953
2016	8664.909656
2017	9161.769254
2018	9755.274652
2019	9673.44045
2020	9151.856248