Year	thousand metric tons of CO2 equivalent
1990	4263.9032
1991	4468.212
1992	4555.7346
1993	4635.7476
1994	4740.0476
1995	4854.271
1996	5104.6804
1997	5351.9608
1998	5417.6698
1999	5576.1462
2000	6044.4532
2001	5500.1562
2002	5851.2598
2003	7160.4632
2004	7343.5246
2005	7621.6778
2006	7421.4814
2007	7552.0054
2008	7698.7108
2009	7871.0442
2010	8227.035
2011	8209.7212
2012	8261.8414
2013	8541.3952
2014	8603.4388
2015	8678.5348
2016	9162.457
2017	9184.1216
2018	9279.8094
2019	9275.0712
2020	9597.8946