Year	thousand metric tons of CO2 equivalent
1990	13088.8
1991	12100.675
1992	12477.13
1993	13531.935
1994	14260.3175
1995	15264.69
1996	14787.9925
1997	14853.8425
1998	14944.0975
1999	15032.5325
2000	14582.94
2001	15548.405
2002	14808
2003	16163.42
2004	14914.16
2005	15603.55
2006	15721.655
2007	16829.3675
2008	16274.0325
2009	17754.005
2010	18739.06
2011	19147.445
2012	20265.9225
2013	20700.0725
2014	21968.055
2015	21609.0275
2016	21304.405
2017	21865.0375
2018	20726.5375
2019	21475.925
2020	22352.2125