Year	thousand metric tons of CO2 equivalent
1990	418.13
1991	410.7025
1992	424.03
1993	432.62
1994	456.4625
1995	461.6
1996	459.785
1997	452.015
1998	458.385
1999	461.6125
2000	465.76
2001	464.485
2002	434.215
2003	445.325
2004	440.9
2005	451.81
2006	494.4925
2007	487.2525
2008	505.4525
2009	492.6875
2010	521.395
2011	526.4025
2012	534.8425
2013	554.5975
2014	565.7025
2015	588.395
2016	583.9325
2017	587.5875
2018	613.755
2019	624.5025
2020	633.61