Year	thousand metric tons of CO2 equivalent
1990	12319.82969
1991	12727.02947
1992	13768.88738
1993	14553.83966
1994	15402.72285
1995	15628.88356
1996	16533.70629
1997	17046.51541
1998	18018.35252
1999	18351.80564
2000	19508.4077
2001	17432.86312
2002	18557.91086
2003	18945.02945
2004	19204.71021
2005	20036.44151
2006	18773.06097
2007	20008.57453
2008	19728.50423
2009	20155.77235
2010	18977.54736
2011	18987.69716
2012	20608.786
2013	20012.6072
2014	20308.5808
2015	20528.8326
2016	21108.5916
2017	20073.28
2018	22167.475
2019	18056.0286
2020	21619.7212