Year	thousand metric tons of CO2 equivalent
1990	57.4
1991	58.1
1992	59.2
1993	60.6
1994	62.1
1995	63.2
1996	80.6
1997	85.1
1998	85
1999	86.4
2000	74.6
2001	78.6
2002	84.8
2003	90.1
2004	92.7
2005	98.2
2006	114.1
2007	124.7
2008	127.3
2009	135.9
2010	128.1
2011	131.1
2012	134.7
2013	150
2014	157.6
2015	168.7
2016	201
2017	206.3
2018	223.1
2019	212.4
2020	220.6