Year	kg per PPP $ of GDP
1990	0.24153742189496133
1991	0.24174628451088612
1992	0.2482080336605848
1993	0.24153615131177686
1994	0.26457479596281525
1995	0.29029178585801346
1996	0.28244902226698265
1997	0.2744359068722462
1998	0.3036652043938126
1999	0.3059148743443806
2000	0.2930289615951239
2001	0.32445183643313014
2002	0.32320037593795964
2003	0.334949033532272
2004	0.34500346417432143
2005	0.2910475715134581
2006	0.3029675412142206
2007	0.2973485062302434
2008	0.28155638306743846
2009	0.2696304603091627
2010	0.25216338120112697
2011	0.2842739012875603
2012	0.2852746352954429
2013	0.26333786352764565
2014	0.24452251482612147
2015	0.23543660193115643
2016	0.21294462484841803
2017	0.1739974129010724
2018	0.16417211168518347
2019	0.17725708714695065
2020	0.16214358687131214