Year	thousand metric tons of CO2 equivalent
1990	5347.5375
1991	4820.7775
1992	4939.93
1993	5053.9325
1994	5265.0175
1995	5207.93
1996	4517.2975
1997	4485.825
1998	3690.05
1999	3987.4125
2000	3814.6875
2001	3614.2225
2002	3713.5
2003	3987.725
2004	3530.7025
2005	4092.875
2006	4083.815
2007	3862.18
2008	4495.485
2009	4229.76
2010	4647.4475
2011	4725.775
2012	4740.1125
2013	4974.14
2014	3999.5325
2015	4968.2575
2016	4490.8025
2017	3621.275
2018	4447.7675
2019	4180.9275
2020	4542.8075