Year	thousand metric tons of CO2 equivalent
1990	107.4
1991	110.8
1992	113.4
1993	116.5
1994	102.6
1995	126
1996	128.6
1997	132.2
1998	136.9
1999	140.9
2000	143.3
2001	146.3
2002	137.5
2003	146.1
2004	150.1
2005	152.5
2006	154.9
2007	159.3
2008	163.8
2009	162.4
2010	166.2
2011	170.4
2012	176
2013	179.9
2014	183.9
2015	186.9
2016	244.4
2017	253
2018	257.2
2019	264.5
2020	262.1