Year	thousand metric tons of CO2 equivalent
1990	106.5
1991	101.6
1992	84.4
1993	87.3
1994	68.1
1995	67.8
1996	60.4
1997	60
1998	62.3
1999	63.1
2000	69.5
2001	69.6
2002	75.9
2003	77
2004	82.3
2005	89.3
2006	98.7
2007	111.4
2008	115.2
2009	115.4
2010	121.9
2011	142
2012	156.8
2013	166.7
2014	160.8
2015	156.2
2016	148.2
2017	175.7
2018	188
2019	217.7
2020	209.8