Year	metric tons per capita
1991	0.7896909969292543
1992	0.8333521472107229
1993	0.9369241916661036
1994	1.049889986775313
1995	1.104667459837919
1996	1.1658321545926043
1997	1.1655156203307029
1998	1.162243447835281
1999	1.1128749907916484
2000	1.0677017339502544
2001	1.3249824122145957
2002	1.1287115606094702
2003	1.184489082057507
2004	1.225478316556719
2005	1.2866396823011261
2006	1.254078662691953
2007	1.2661745609726514
2008	1.437245652796691
2009	1.4507821631311477
2010	1.4783703485638586
2011	1.549377678981776
2012	1.6182000212229004
2013	1.706683117790348
2014	1.7530531640422808
2015	1.8124557542283188
2016	1.787073159813924
2017	1.7863985038912529
2018	1.7788317648232517
2019	1.7641716571761155
2020	1.588045147278251