Year	thousand metric tons of CO2 equivalent
1990	1210.9
1991	1287.3
1992	1319
1993	1340.3
1994	1219.1
1995	1212.9
1996	1326.6
1997	1485.1
1998	1361
1999	1387.6
2000	1385
2001	1444.6
2002	1417.2
2003	1311.2
2004	1230.4
2005	1194.5
2006	1237.1
2007	1414.4
2008	1453.7
2009	1443.3
2010	1516.5
2011	1421.3
2012	1413.8
2013	1385.7
2014	1364.5
2015	1364.7
2016	1273.6
2017	1251.5
2018	1194.4
2019	1179.8
2020	1145.4