Year	thousand metric tons of CO2 equivalent
1990	16.4198
1991	16.241
1992	16.4794
1993	15.645
1994	15.3172
1995	14.5424
1996	15.4364
1997	15.6152
1998	17.8204
1999	15.0192
2000	14.4232
2001	13.708
2002	27.8332
2003	26.0452
2004	25.2406
2005	25.0618
2006	25.2704
2007	20.711
2008	26.6412
2009	20.413
2010	30.2172
2011	25.5088
2012	25.5684
2013	25.8068
2014	25.777
2015	37.3096
2016	49.8256
2017	58.7954
2018	61.7158
2019	62.58
2020	62.6694