Year	thousand metric tons of CO2 equivalent
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	1623.683951
2002	3247.367903
2003	4871.051854
2004	6494.735805
2005	8118.419756
2006	7620.839191
2007	7123.258625
2008	6625.678059
2009	6128.097494
2010	5630.516928
2011	5634.923638
2012	5639.330349
2013	5643.737059
2014	5648.14377
2015	5652.55048
2016	5716.888453
2017	5781.226426
2018	5845.564399
2019	5909.902372
2020	5974.240345