Year	thousand metric tons of CO2 equivalent
1990	0.00118229
1991	0.00116655
1992	0.0012293
1993	0.00114941
1994	0.000715166
1995	0.000771454
1996	0.000777047
1997	0.000798402
1998	0.000824028
1999	0.000863869
2000	0.000879059
2001	0.000903279
2002	0.000892201
2003	0.00090413
2004	0.000917035
2005	0.000907196
2006	0.000925692
2007	0.000926201
2008	0.000932222
2009	0.000935557
2010	0.000940833
2011	0.000940293
2012	0.000937578
2013	0.000926035
2014	0.000917063
2015	0.000908508
2016	0.000883267
2017	0.000883267
2018	0.000883267
2019	0.000883267
2020	0.000883267