Year	thousand metric tons of CO2 equivalent
1990	20146.93093
1991	20595.23751
1992	21053.22929
1993	21652.95227
1994	22038.50045
1995	22229.80983
1996	23280.79986
1997	24042.6285
1998	25575.91973
1999	25909.82537
2000	26310.8436
2001	26650.38831
2002	26967.77923
2003	28108.94174
2004	28218.41285
2005	30273.17977
2006	30207.96002
2007	29708.74528
2008	30446.89674
2009	29845.0686
2010	32202.73585
2011	33227.98042
2012	34395.7268
2013	35429.61537
2014	35955.40134
2015	36059.15751
2016	38525.13856
2017	39662.52362
2018	40043.13247
2019	40849.77892
2020	41196.30278