Year	metric tons per capita
1990	4.202822264640877
1991	4.116343903773091
1992	4.128991592266292
1993	4.3265713285589165
1994	4.212346491073203
1995	4.1864166890125025
1996	4.945527738581284
1997	4.399938103100404
1998	4.807616151844835
1999	4.402020284144596
2000	4.205640683988452
2001	4.26098417500376
2002	4.023697168091391
2003	4.364953219048561
2004	4.237009879048858
2005	4.429096457939591
2006	4.439130375918812
2007	4.704193232953408
2008	4.625935775577189
2009	4.345710752906653
2010	4.279714617186063
2011	4.726493988328676
2012	4.559438414236347
2013	4.0891114444358925
2014	3.8814491564005658
2015	3.7345680626219
2016	3.6524432241714764
2017	3.9165578616885512
2018	3.679413631500685
2019	4.2403992619367665
2020	3.6617704420609827