Year	thousand metric tons of CO2 equivalent
1990	6641.3254
1991	6891.8972
1992	7136.2428
1993	7269.0264
1994	7190.2068
1995	7072.1968
1996	7323.0904
1997	7161.7646
1998	6959.4094
1999	6796.7446
2000	6585.598
2001	6718.6184
2002	6703.4758
2003	7104.06117
2004	7448.856541
2005	7491.055311
2006	7917.140059
2007	7791.534606
2008	7925.192154
2009	7930.402701
2010	7917.335049
2011	7825.028941
2012	8272.820633
2013	8242.671926
2014	8199.530018
2015	7855.74291
2016	8077.054644
2017	7986.984777
2018	7797.08071
2019	7949.108044
2020	7967.681977