Year	thousand metric tons of CO2 equivalent
1990	3447.5614
1991	3527.2354
1992	3504.3442
1993	3536.194
1994	3544.1542
1995	3563.3014
1996	3837.0512
1997	3903.9452
1998	4489.1266
1999	3905.259
2000	4484.8474
2001	3865.9606
2002	3799.9994
2003	4145.8112
2004	3675.6434
2005	4638.74
2006	4502.0804
2007	4250.136425
2008	4286.985051
2009	4141.042476
2010	4386.153302
2011	4790.764366
2012	4679.436231
2013	5043.540495
2014	4915.16056
2015	5171.045024
2016	5192.00023
2017	5518.409035
2018	5369.03804
2019	5489.526246
2020	6369.119051