Year	thousand metric tons of CO2 equivalent
1990	37766.354
1991	36732.8526
1992	36773.502
1993	37293.8766
1994	37524.8876
1995	36706.5096
1996	37499.6204
1997	37462.2066
1998	38737.9228
1999	37931.3518
2000	38139.7856
2001	38609.3752
2002	37109.4924
2003	37705.169
2004	36704.1192
2005	38930.5252
2006	38255.2788
2007	39284.5766
2008	38459.5474
2009	39022.9832
2010	39618.2398
2011	41995.1668
2012	41247.5512
2013	42490.0936
2014	42151.78913
2015	40545.44246
2016	43595.29868
2017	43877.23291
2018	43104.43534
2019	43635.05416
2020	43291.23439