Year	kg per 2021 PPP $ of GDP
1990	0.7023452231159378
1991	0.6884606135965318
1992	1.0868915821140936
1993	1.0676381981788892
1994	0.9273425938821374
1995	1.0187704267095168
1996	0.8421335666540042
1997	0.7753696479667446
1998	0.7049054494113454
1999	0.6472114263723326
2000	0.6174494499687467
2001	0.5356517661678515
2002	0.48538094388718855
2003	0.48066191599014807
2004	0.4359845012667699
2005	0.3615527453478812
2006	0.27279407466527644
2007	0.19775843574813526
2008	0.19677250400304044
2009	0.15075588587059516
2010	0.13684623109150032
2011	0.15341140895148705
2012	0.16572808587507667
2013	0.1609405579100661
2014	0.1632328886340962
2015	0.15911234677273187
2016	0.16661140664070515
2017	0.16482233474887276
2018	0.166304809954589
2019	0.17609431473141893
2020	0.17770745100376759