Year	metric tons per capita
1990	1.6649543230525072
1991	1.7363690597044579
1992	1.789246766705287
1993	1.921542237613158
1994	1.987505585302384
1995	2.1844510208106818
1996	2.17190873377097
1997	2.209296293381634
1998	2.230096307360635
1999	2.182314599318918
2000	2.2793332091897067
2001	2.3809031402825753
2002	2.5208769127843174
2003	2.863843597839998
2004	3.2370019465293245
2005	3.603326543135263
2006	3.9113944940427507
2007	4.19189560362425
2008	4.282709373017497
2009	4.509423895202631
2010	4.9027260605916725
2011	5.299730947499814
2012	5.401533929901377
2013	5.57599671571376
2014	5.590476392689769
2015	5.490490020438944
2016	5.46786802103307
2017	5.5784132504164345
2018	5.83173007219231
2019	5.951458120180404
2020	5.982296926164593