Year	thousand metric tons of CO2 equivalent
1990	33571.786
1991	33382.854
1992	34049.0628
1993	33512.9012
1994	34463.9086
1995	34458.8724
1996	34690.8654
1997	34979.4486
1998	34591.244
1999	34820.3464
2000	36919.5776
2001	36727.755
2002	37258.94
2003	41094.9748
2004	41203.7448
2005	40747.9538
2006	42052.0316
2007	44385.0438
2008	42985.5464
2009	37465.5136
2010	38513.1326
2011	39547.133
2012	38995.7138
2013	40358.7062
2014	40723.041
2015	40297.2288
2016	43184.3422
2017	45730.5138
2018	45015.4926
2019	47002.3778
2020	48504.0296