Year	metric tons per capita
1990	8.712631543080038
1991	9.257494464293138
1992	5.404698341726768
1993	4.2779678451143255
1994	4.052123733711333
1995	3.787658765171108
1996	3.953728509975947
1997	3.894703895263315
1998	4.143485068031131
1999	3.4751341992226403
2000	3.0049412264940263
2001	3.2140838269249494
2002	3.259651932419555
2003	3.289018869394091
2004	3.52820118001525
2005	3.8612767145980413
2006	3.9816704379235017
2007	4.088021702760566
2008	4.085508520178811
2009	3.696620460359997
2010	4.069051510324213
2011	3.911872567587427
2012	3.9915348321308204
2013	3.831065402751946
2014	3.7044817377906654
2015	3.809894282439043
2016	3.905926684426743
2017	3.9676807017953246
2018	4.159315063163407
2019	4.2001519610527325
2020	4.18400041504391