Year	thousand metric tons of CO2 equivalent
1990	44613.818400000004
1991	44447.027799999996
1992	46417.5826
1993	46343.6786
1994	45891.10599999999
1995	47518.00719999999
1996	49341.5586
1997	50078.899999999994
1998	52692.211
1999	52447.0762
2000	52925.1278
2001	54985.3806
2002	57132.9474
2003	56087.772
2004	59910.9034
2005	60992.7626
2006	63486.15839999999
2007	61488.87299999999
2008	60438.5124
2009	61189.35319999999
2010	59889.507000000005
2011	58879.525400000006
2012	59271.454999999994
2013	59223.4174
2014	57876.785200000006
2015	57462.5652
2016	57229.4398
2017	57933.8224
2018	57605.9032
2019	58338.0296
2020	59294.877799999995