Year	metric tons per capita
1990	1.9145462633843824
1991	2.0005432836858477
1992	2.0757404053323256
1993	2.244842079359153
1994	2.3221892292137754
1995	2.5634787588548003
1996	2.5218718738450163
1997	2.5479036644107067
1998	2.6058357321437917
1999	2.517420763369747
2000	2.650409101528933
2001	2.774762196799937
2002	2.964821227741331
2003	3.4340364793542375
2004	3.945154871438767
2005	4.467696361181848
2006	4.9102761971594635
2007	5.3063680063131455
2008	5.435079096066524
2009	5.798319937502817
2010	6.3354197674375134
2011	6.90134732553428
2012	7.045200230396029
2013	7.3201549250315425
2014	7.304712871575817
2015	7.1451315350832685
2016	7.105479935725145
2017	7.226160154417479
2018	7.533193133536742
2019	7.645435785600376
2020	7.756137906597689