Year	thousand metric tons of CO2 equivalent
1990	3933.276001
1991	3974.420351
1992	3965.224501
1993	4027.17585
1994	4165.4762
1995	4328.90055
1996	4423.753167
1997	4503.130384
1998	4625.045401
1999	4558.257018
2000	4578.014235
2001	4617.741039
2002	4525.798242
2003	4522.523646
2004	4636.955049
2005	4682.877653
2006	4782.648694
2007	4828.584534
2008	4986.838175
2009	5269.772215
2010	5449.690856
2011	5710.385929
2012	5782.973603
2013	6064.026476
2014	6289.07355
2015	6325.705224
2016	6530.926765
2017	6537.450106
2018	6890.773648
2019	6988.241789
2020	7177.760331