Year	thousand metric tons of CO2 equivalent
1990	97.733507
1991	101.41017
1992	108.484033
1993	115.706896
1994	116.582359
1995	116.623422
1996	116.748564
1997	116.814107
1998	116.93925
1999	117.123992
2000	109.769335
2001	102.928309
2002	103.298884
2003	107.573258
2004	110.000033
2005	111.950007
2006	114.426624
2007	137.673841
2008	139.375658
2009	129.038275
2010	132.051292
2011	136.108681
2012	137.57347
2013	138.621059
2014	140.026248
2015	123.789837
2016	97.1025
2017	101.228363
2018	99.632627
2019	90.02069
2020	86.279353