Year	thousand metric tons of CO2 equivalent
1990	170.2
1991	171
1992	171.7
1993	176.1
1994	179.7
1995	193.2
1996	196.6
1997	195.8
1998	200.8
1999	202.9
2000	197.2
2001	202
2002	205.9
2003	207.7
2004	207.6
2005	205.8
2006	218.9
2007	233.6
2008	240.9
2009	372.9
2010	365.1
2011	378.3
2012	388
2013	316.4
2014	356.9
2015	345.8
2016	341.2
2017	286.7
2018	288.8
2019	303
2020	324.8