Year	thousand metric tons of CO2 equivalent
1990	11269
1991	11977.99
1992	12493.4975
1993	12758.0175
1994	12995.8725
1995	13136.265
1996	13396.5025
1997	14102.0725
1998	13207.0275
1999	14643.5925
2000	15101.6725
2001	14761.745
2002	15935.1925
2003	16042.28
2004	16360.3225
2005	16349.1975
2006	16944.45
2007	17634.12
2008	17817.9375
2009	15813.7125
2010	14881.2575
2011	16114.105
2012	16730.335
2013	16087.74
2014	15994.055
2015	15374.085
2016	15570.9875
2017	14776.6275
2018	13166.8375
2019	9870.73
2020	9946.13