Year	thousand metric tons of CO2 equivalent
1990	5856.594
1991	5706.0146
1992	5364.3278
1993	5436.2948
1994	5302.4332
1995	5242.863
1996	5216.9668
1997	5196.5836
1998	5084.2674
1999	4863.5388
2000	4831.8018
2001	4759.8348
2002	4620.9072
2003	4629.132
2004	4443.2992
2005	4430.3958
2006	4419.2506
2007	4448.8122
2008	4581.452
2009	4423.0054
2010	4382.686
2011	4381.8218
2012	4442.1966
2013	4330.9234
2014	4521.8818
2015	4673.3254
2016	4714.8368
2017	4741.2396
2018	4473.1886
2019	4647.4292
2020	4740.1072