Year	thousand metric tons of CO2 equivalent
1990	531.698117
1991	537.601581
1992	554.771075
1993	559.0447
1994	570.235739
1995	581.521181
1996	587.431942
1997	596.121422
1998	622.089399
1999	624.426769
2000	650.281177
2001	664.962165
2002	672.570152
2003	696.573254
2004	701.479659
2005	715.392769
2006	719.49117
2007	754.137691
2008	725.676041
2009	742.387849
2010	688.374219
2011	647.018037
2012	595.316035
2013	548.300109
2014	546.610928
2015	542.838726
2016	523.973895
2017	518.073895
2018	513.073895
2019	485.473895
2020	410.873895