Year	thousand metric tons of CO2 equivalent
1990	3506.5958
1991	3436.1784
1992	3571.0532
1993	3636.7324
1994	3415.9442
1995	3316.9486
1996	3406.4082
1997	3256.8718
1998	3802.331
1999	3707.9842
2000	3614.9784
2001	3767.0478
2002	3560.0272
2003	3790.6196
2004	4443.5376
2005	3807.248
2006	4171.4934
2007	4177.513
2008	3872.8378
2009	4446.458
2010	4697.1952
2011	4792.8234
2012	5199.3848
2013	5246.141
2014	5466.959
2015	5521.2248
2016	5446.9334
2017	5413.2892
2018	5508.232
2019	5545.333
2020	5565.746