Year	metric tons per capita
1990	9.460447460973452
1991	9.269838693162239
1992	8.823905472634745
1993	8.337383891155966
1994	7.880861374281412
1995	7.806830629270497
1996	7.823364314856038
1997	7.548345466142284
1998	7.534829300630837
1999	7.458704482321556
2000	7.54143267285306
2001	7.599451934844817
2002	7.599568930437529
2003	7.821923758055886
2004	7.805007816603789
2005	7.775481225514572
2006	7.889584770245027
2007	7.863077314825554
2008	7.772648786754872
2009	7.158869911117881
2010	7.400627070021585
2011	7.399499085514566
2012	7.292541970460976
2013	7.106118036930062
2014	6.760492004327006
2015	6.696049132048389
2016	6.6940898129369
2017	6.74128867570004
2018	6.7284814794840155
2019	6.550475900369674
2020	6.1098834229858205