Year	thousand metric tons of CO2 equivalent
1990	67300.00967400002
1991	58572.625125000006
1992	53391.4382
1993	50888.80439999999
1994	49458.672600000005
1995	47701.783800000005
1996	48424.8212
1997	49267.207599999994
1998	47209.60700000001
1999	45941.8256
2000	45949.9312
2001	46859.159
2002	46180.9408
2003	46024.6994
2004	47357.087199999994
2005	46908.9846
2006	46886.09819999999
2007	47944.028
2008	48893.307
2009	46964.7702
2010	47488.683999999994
2011	48486.209200000005
2012	47831.6224
2013	48674.0982
2014	48581.658599999995
2015	49737.2728
2016	51275.0422
2017	51885.5548
2018	50815.049399999996
2019	51453.2462
2020	50597.7478