Year	kt of CO2 equivalent
1990	12.622286
1991	12.904215
1992	13.186143
1993	13.468072
1994	13.75
1995	14.031928
1996	14.380264
1997	14.728599
1998	15.076934
1999	15.42527
2000	15.773605
2001	16.062351
2002	16.351097
2003	16.639843
2004	16.928589
2005	17.217335
2006	17.363212
2007	17.509089
2008	17.654966
2009	17.800843
2010	17.94672
2011	18.076384
2012	18.206048
2013	18.335712
2014	18.465376
2015	18.595039
2016	18.781292
2017	18.967544
2018	19.153797
2019	19.340049
2020	19.526302