Year	thousand metric tons of CO2 equivalent
1990	3117.5
1991	3127.5
1992	3156.2000000000003
1993	3150.8999999999996
1994	3185.8999999999996
1995	3321.1
1996	3397.8999999999996
1997	3505.7
1998	3604.8
1999	3674.5
2000	3676.4000000000005
2001	3749.8
2002	3843.7000000000003
2003	3990.2999999999997
2004	4138.5
2005	4323.1
2006	4457.5
2007	4368.9
2008	4550.200000000001
2009	4596.500000000001
2010	4624.5
2011	4717.5
2012	4483.299999999999
2013	4636.4
2014	4864.299999999999
2015	4820.9
2016	5038.299999999999
2017	5214.5
2018	5225.7
2019	5395.400000000001
2020	5342.5