Year	thousand metric tons of CO2 equivalent
1990	34771.664667
1991	39156.213673
1992	39768.402099
1993	38796.347802000004
1994	38013.293504999994
1995	37752.840155000005
1996	40286.221184999995
1997	42827.40221500001
1998	43997.583243999994
1999	44926.364273
2000	45235.745304
2001	47290.153799000014
2002	48906.662296999995
2003	51486.470792999986
2004	55190.77929
2005	58856.08778700001
2006	61001.65708600001
2007	59279.226384999994
2008	60106.59568500002
2009	60580.66498300002
2010	61599.234283
2011	66603.991671
2012	63080.049055
2013	65200.606440999996
2014	67336.06382699999
2015	68675.621214
2016	68461.62211299998
2017	70300.123012
2018	71636.823909
2019	72969.32480900001
2020	72620.12570900001