Year	metric tons per capita
1990	3.1178187839119524
1991	3.6129501909924726
1992	3.6258303417962865
1993	3.8343362076699212
1994	4.070677880000529
1995	4.286163780619924
1996	4.767966399232135
1997	4.989143580048132
1998	4.845601727825012
1999	5.116744837809873
2000	5.419703074505941
2001	5.498931996098802
2002	5.648885189548945
2003	5.821076338478713
2004	6.230942287027005
2005	6.440996320872276
2006	6.549858346542792
2007	6.993229591367445
2008	7.318407813450232
2009	6.43127859159965
2010	6.959707227566133
2011	6.935319956224157
2012	6.925634921287818
2013	7.402951012760759
2014	7.719435953045075
2015	7.603420443889862
2016	7.348421251028264
2017	7.039825673198043
2018	7.4523713820598
2019	7.464999716498161
2020	7.383715412229153