Year	thousand metric tons of CO2 equivalent
1990	130.1
1991	114.8
1992	82.6
1993	75.5
1994	34.5
1995	35.5
1996	39.8
1997	60.1
1998	76.7
1999	74.5
2000	100.1
2001	99.8
2002	101.1
2003	101
2004	106.9
2005	107.6
2006	122
2007	127.8
2008	139.2
2009	139
2010	136.9
2011	148.3
2012	137.6
2013	131
2014	131.2
2015	138.6
2016	155.9
2017	154
2018	190
2019	189.1
2020	187.6