Year	metric tons per capita
1990	3.4455533097524
1991	3.4792720872489546
1992	3.379266614083113
1993	3.372117750706322
1994	3.3575858778625953
1995	3.4386970379250856
1996	3.650534399266455
1997	3.7574770423207617
1998	3.940913851072039
1999	4.0544018639682475
2000	4.163613350209847
2001	4.22357803581972
2002	4.340954725046959
2003	4.619916746717899
2004	4.654108764773691
2005	4.716473224905783
2006	4.919957970208295
2007	5.111197815060476
2008	5.142280573206328
2009	5.365888281638157
2010	5.435556333508373
2011	5.258909937852391
2012	5.359627711750347
2013	5.343683966688136
2014	5.340893809673227
2015	5.450239601516549
2016	5.526478512433196
2017	5.488427221545452
2018	5.550826184707398
2019	5.525581597316457
2020	5.121730121730122