Year	thousand metric tons of CO2 equivalent
1990	268.003
1991	271.938265
1992	272.19613
1993	250.626395
1994	244.83426
1995	251.513725
1996	274.547434
1997	273.614743
1998	270.773453
1999	275.295362
2000	304.293671
2001	286.889498
2002	331.293924
2003	323.42715
2004	348.618576
2005	356.098202
2006	366.779219
2007	372.405236
2008	378.448452
2009	389.733069
2010	397.039086
2011	399.716008
2012	408.43033
2013	409.825652
2014	420.515174
2015	424.297296
2016	419.143068
2017	425.345641
2018	415.986813
2019	419.460586
2020	412.555358