Year	metric tons per capita
1990	5.9997695972995695
1991	6.707978857103638
1992	5.7493648540975295
1993	5.220685624128148
1994	4.485681139773453
1995	4.409440878432019
1996	3.686953046478348
1997	3.5767250503931742
1998	3.5543342862892433
1999	3.544007629438564
2000	3.6706434449254766
2001	3.6279205581490905
2002	3.850073979292212
2003	3.7005087317312375
2004	3.767325505752874
2005	4.320847277821085
2006	4.811327260287877
2007	4.997422900988354
2008	4.925951644850367
2009	5.114344888257566
2010	5.295464973432204
2011	5.732418152305191
2012	6.138738388360481
2013	6.461561118154279
2014	6.2428883883033865
2015	5.835434972741368
2016	5.998504730892821
2017	6.32277465011644
2018	6.809659066666119
2019	7.160835656147234
2020	6.43064533509798