Year	metric tons per capita
1990	5.145671931946907
1991	4.9931638219589685
1992	4.980942211866682
1993	5.072142111552468
1994	4.922597018331041
1995	5.158326535423661
1996	5.397607932975694
1997	5.538351043324422
1998	5.501246414465666
1999	5.234656376945595
2000	5.383910227594224
2001	5.458170899972158
2002	5.556353657617532
2003	5.266078942041373
2004	5.323029266829469
2005	5.526101020350196
2006	5.443570919886189
2007	5.17304625665806
2008	5.409644283331972
2009	5.386433272196886
2010	5.714834555933824
2011	5.5003686225388035
2012	6.1461208602821005
2013	6.0467348018824705
2014	5.936295447149162
2015	5.343217080696067
2016	4.894584721144056
2017	4.573681235350754
2018	4.363961452914376
2019	3.7105990701334126
2020	2.545027978319615