Year	kg per 2021 PPP $ of GDP
1990	0.28207598511056414
1991	0.2826836957462925
1992	0.28935660064740415
1993	0.30247336364071326
1994	0.31743795506509564
1995	0.31808548441010387
1996	0.3132360866859104
1997	0.315623043013644
1998	0.3019448831403918
1999	0.30586677603176815
2000	0.30015900150423047
2001	0.3095000190985242
2002	0.31537874855823955
2003	0.3129602834403819
2004	0.3062495593190982
2005	0.31167887721188303
2006	0.31193472815366796
2007	0.3099879290454207
2008	0.3139519504851941
2009	0.3205946321755197
2010	0.3185012409950639
2011	0.31253525860835063
2012	0.3192789592488578
2013	0.32007542305776665
2014	0.3213822136025845
2015	0.3159482220467501
2016	0.3045928209129121
2017	0.30260541997860063
2018	0.29444645456474844
2019	0.2908128989896913
2020	0.2892678178992784