Year	thousand metric tons of CO2 equivalent
1990	15773.372734990002
1991	17278.130788000002
1992	18543.713760999995
1993	19694.504360000003
1994	21600.828338
1995	22598.907052999995
1996	23967.762892000002
1997	27871.536934
1998	29154.430924000004
1999	29419.06775000001
2000	30528.836688000003
2001	32221.892182999996
2002	32465.943554999998
2003	36826.52788100001
2004	40031.416558000004
2005	41366.518451
2006	42068.060556
2007	43553.41362200001
2008	46122.195086
2009	46306.37357300001
2010	51069.248978
2011	53362.43685500001
2012	54539.64369000001
2013	54971.19999
2014	56112.621299
2015	55098.996806
2016	54676.510816999995
2017	53002.534757
2018	52143.658697000006
2019	52082.18263599999
2020	50910.106576000006