Year	thousand metric tons of CO2 equivalent
1990	190.8
1991	195.7
1992	201.1
1993	205.2
1994	211.5
1995	218.1
1996	225.9
1997	228.5
1998	234.5
1999	266.5
2000	271.2
2001	277.2
2002	285.1
2003	292.9
2004	299.7
2005	308.8
2006	313.2
2007	321.7
2008	332.6
2009	361.2
2010	369.5
2011	378.9
2012	388.2
2013	397
2014	404.8
2015	414.4
2016	426
2017	408.7
2018	435.5
2019	451.2
2020	479.8