Year	thousand metric tons of CO2 equivalent
1990	1.060544
1991	1.179676
1992	1.209409
1993	1.149741
1994	1.179473
1995	1.179405
1996	1.210288
1997	1.241171
1998	1.242254
1999	1.273137
2000	1.27422
2001	1.277612
2002	1.310804
2003	1.314196
2004	1.317588
2005	1.320979
2006	1.321355
2007	1.321732
2008	1.351908
2009	1.382084
2010	1.35266
2011	1.382685
2012	1.382911
2013	1.383136
2014	1.383362
2015	1.413388
2016	1.413388
2017	1.413388
2018	1.413388
2019	1.443188
2020	1.443188