Year	kg per 2021 PPP $ of GDP
1990	0.284957044967758
1991	0.29587868847750004
1992	0.3040213726623579
1993	0.3200682259681528
1994	0.34070487402116395
1995	0.3427364814593618
1996	0.33102450034864683
1997	0.3359032169938303
1998	0.3084856050893461
1999	0.3056621491440486
2000	0.30153068415190604
2001	0.3076517666873199
2002	0.30470896504793304
2003	0.30825589405990034
2004	0.30409317881652304
2005	0.3141248612614867
2006	0.3124668760994056
2007	0.3060101817938035
2008	0.30566293870449524
2009	0.30838342453613304
2010	0.29893155366873647
2011	0.2979384709273281
2012	0.3048763928133322
2013	0.3100192970185797
2014	0.31029904824196797
2015	0.30128556186597105
2016	0.28842564427660944
2017	0.29114095333824125
2018	0.2906419046913249
2019	0.28372573737504553
2020	0.27764033865637117