Year	thousand metric tons of CO2 equivalent
1990	256.0118
1991	305.2414
1992	301.278
1993	335.1904
1994	324.2836
1995	375.48
1996	367.7916
1997	391.9296
1998	386.357
1999	401.555
2000	358.4046
2001	367.136
2002	394.552
2003	431.8914
2004	483.803
2005	389.0092
2006	391.4826
2007	397.681
2008	460.7974
2009	413.4452
2010	456.1784
2011	408.4388
2012	461.3338
2013	499.6268
2014	478.5582
2015	533.7478
2016	455.1652
2017	451.8872
2018	531.3042
2019	538.8436
2020	525.523