Year	thousand metric tons of CO2 equivalent
1990	19175.208552999997
1991	18506.890572
1992	16550.284242
1993	14699.275682
1994	12328.103121999999
1995	11641.295726
1996	11177.940230999999
1997	10757.310232
1998	10746.35151
1999	10554.049258
2000	10718.436234
2001	10587.386843
2002	10788.804726
2003	10949.478926
2004	11183.575345000001
2005	11257.04773
2006	12017.304834999999
2007	12213.45911
2008	12496.864473
2009	11707.859761999996
2010	12124.049956
2011	12689.862615000002
2012	13046.629515999999
2013	13011.913287
2014	12721.661226
2015	12662.076205999998
2016	12850.414974999998
2017	13040.014974999998
2018	13918.114974999999
2019	14434.714975
2020	14034.014974999998