Year	thousand metric tons of CO2 equivalent
1990	23059.54429
1991	23062.72501
1992	23594.73396
1993	21077.02018
1994	21374.3266
1995	21560.13002
1996	22838.89322
1997	23352.84002
1998	25561.34862
1999	25387.60742
2000	24053.60402
2001	24901.08701
2002	28470.4428
2003	27259.0714
2004	28183.78059
2005	29580.03678
2006	31034.40935
2007	34606.96072
2008	35577.06748
2009	37205.16285
2010	38921.31262
2011	38359.39825
2012	40455.03208
2013	41192.10991
2014	42822.32574
2015	43929.57877
2016	45628.53216
2017	46534.81716
2018	47230.17516
2019	51133.34736
2020	53761.30355