Year	thousand metric tons of CO2 equivalent
1990	3777.5374
1991	3545.3954
1992	3856.269
1993	3945.6392
1994	3962.2676
1995	3984.2898
1996	3798.755
1997	4481.8306
1998	4887.647
1999	4520.3322
2000	4492.1414
2001	4517.6204
2002	5139.8742
2003	5879.6294
2004	6460.2824
2005	6807.5716
2006	6767.133
2007	7005.1456
2008	7496.3092
2009	6112.874
2010	7421.0344
2011	7615.5986
2012	7789.3028
2013	6870.3006
2014	7186.866
2015	6864.9664
2016	6814.962
2017	6504.3268
2018	5802.954
2019	5882.52
2020	5919.919