Year	kg per PPP $ of GDP
1990	2.2313990832649284
1991	1.9150621778663235
1992	1.6373449893505942
1993	1.5125777954728794
1994	2.227156249521376
1995	2.3818371186307288
1996	1.9740937810898336
1997	2.1827119754339512
1998	2.103641951629157
1999	2.1076204939637644
2000	1.9965569465977293
2001	1.901214832935358
2002	1.9765104756391907
2003	2.10076810505613
2004	2.0750670012842423
2005	1.8242323208508577
2006	1.6364031405961659
2007	1.6160128828025289
2008	1.4011187619525407
2009	1.159858528317194
2010	1.185368554395943
2011	1.113544841539068
2012	1.041475455153375
2013	0.9162054663427028
2014	0.8204518349760065
2015	0.8069808601803556
2016	0.7798621122719286
2017	0.7392257233924445
2018	0.6621126768797176
2019	0.6004373824487552