Year	thousand metric tons of CO2 equivalent
1990	1087.1
1991	1131.9
1992	1216.2
1993	1295.9
1994	1380.3
1995	1281.1
1996	1350.6
1997	1370.8
1998	1409.9
1999	1431
2000	1483.6
2001	1520
2002	1594.5
2003	1656.1
2004	1742.2
2005	1829.2
2006	1965.3
2007	2161.3
2008	2336.1
2009	2462.5
2010	2588
2011	2801.6
2012	3027.4
2013	3094.5
2014	3291.4
2015	3507.8
2016	3475.4
2017	3409.1
2018	3219.3
2019	3221.2
2020	2912.5