Year	thousand metric tons of CO2 equivalent
1990	690.4
1991	663.3
1992	690.7
1993	719.1
1994	732
1995	790.8
1996	832.6
1997	859.3
1998	860.6
1999	852.8
2000	853.1
2001	843.8
2002	839.6
2003	828.8
2004	837.1
2005	836
2006	802.8
2007	828.1
2008	845.4
2009	878
2010	919
2011	934.3
2012	975.1
2013	1048.3
2014	1089.3
2015	1190
2016	1275.9
2017	1359.9
2018	1401.3
2019	1456.9
2020	1288.9