Year	thousand metric tons of CO2 equivalent
1990	935.912129
1991	846.21736
1992	756.92
1993	718.2694
1994	738.295
1995	674.076
1996	611.8834
1997	667.52
1998	658.5204
1999	638.2862
2000	645.2296
2001	657.6562
2002	641.0576
2003	645.2296
2004	604.791
2005	590.189
2006	589.5632
2007	586.7918
2008	579.3418
2009	575.1102
2010	579.9378
2011	572.2494
2012	557.4984
2013	555.0548
2014	569.9548
2015	571.7726
2016	574.097
2017	571.7726
2018	565.3954
2019	575.4678
2020	581.1596