Year	thousand metric tons of CO2 equivalent
1990	50.3
1991	62.2
1992	64.1
1993	64.4
1994	64.2
1995	68.6
1996	70.6
1997	74.3
1998	76.3
1999	79.5
2000	83.6
2001	94.1
2002	96.2
2003	102.3
2004	100.9
2005	110.2
2006	127.7
2007	164.3
2008	182.2
2009	185.6
2010	203.6
2011	236.8
2012	267.1
2013	289
2014	305.9
2015	323.6
2016	312.2
2017	310.9
2018	307.4
2019	306.5
2020	256.1