Year	thousand metric tons of CO2 equivalent
1990	9454.1394
1991	10126.0996
1992	10099.6074
1993	10885.0758
1994	10030.4416
1995	11734.3162
1996	12115.4582
1997	11763.0434
1998	12285.2288
1999	12400.376
2000	13169.8418
2001	13448.5612
2002	14139.653
2003	14540.0756
2004	15684.038
2005	15496.7748
2006	15181.5206
2007	14671.7022
2008	14913.0226
2009	14800.2892
2010	14403.5022
2011	14991.039
2012	14558.3728
2013	14626.9128
2014	14743.252
2015	15312.1936
2016	15671.4028
2017	15492.8114
2018	14674.8908
2019	12802.6164
2020	12775.3792