Year	thousand metric tons of CO2 equivalent
1990	44547.13787
1991	41837.38876
1992	37718.8494
1993	33287.2012
1994	30808.4554
1995	28053.5312
1996	24594.6708
1997	24295.0536
1998	21694.4056
1999	20448.5234
2000	20276.2796
2001	20613.479
2002	21537.8334
2003	20354.0516
2004	19841.5262
2005	19693.7748
2006	19986.4898
2007	21106.9706
2008	22795.495
2009	20306.8734
2010	21481.6516
2011	23981.7484
2012	23341.2794
2013	25084.98014
2014	24880.90389
2015	24021.63323
2016	25485.36962
2017	26258.94081
2018	26843.7236
2019	27478.1106
2020	28400.54979