Year	thousand metric tons of CO2 equivalent
1990	5257.83
1991	5186.4575
1992	5055.9775
1993	4849.3275
1994	5012.31
1995	4975.79
1996	5083.7875
1997	5070.8625
1998	5043.9325
1999	5050.975
2000	4979.3125
2001	4650.78
2002	4602.225
2003	4604.4625
2004	4601.905
2005	4659.685
2006	4578.2925
2007	4590.0375
2008	4598.7825
2009	4577.285
2010	4453.6575
2011	4562.915
2012	4538.0825
2013	4474.325
2014	4586.15
2015	4745.51
2016	4778.67
2017	4940.395
2018	4793.595
2019	4866.2525
2020	4847.0775