Year	thousand metric tons of CO2 equivalent
1990	35099.886
1991	34978.284
1992	35708.7228
1993	35235.4912
1994	36190.7286
1995	36238.14573
1996	36617.09207
1997	36935.9286
1998	36596.13067
1999	36766.63973
2000	38831.5776
2001	38634.36102
2002	39168.85204
2003	43089.99286
2004	43316.96888
2005	42938.8839
2006	44294.25029
2007	46711.05108
2008	45381.24227
2009	39791.09806
2010	41008.30565
2011	42143.05607
2012	41611.2869
2013	43058.52932
2014	43399.01415
2015	43040.15198
2016	45959.5346
2017	48583.77542
2018	47884.22344
2019	49875.87787
2020	51061.49889