Year	kg per 2021 PPP $ of GDP
1990	0.41386035639616386
1991	0.41962328325294507
1992	0.42015167855845403
1993	0.41502876715424475
1994	0.4054570562078693
1995	0.41062407491162606
1996	0.39558141723274387
1997	0.3827053009756623
1998	0.37870532625473563
1999	0.3641688999148078
2000	0.35725443668997375
2001	0.3552599843640608
2002	0.3529206877410981
2003	0.36116350323115576
2004	0.36318503615604286
2005	0.3644882346895653
2006	0.36079005353388505
2007	0.3530991492364794
2008	0.34500290809692175
2009	0.3471287909034732
2010	0.3477935591658349
2011	0.35068748245182674
2012	0.3438776989303871
2013	0.3372256814149051
2014	0.32689829227729894
2015	0.31095074051881927
2016	0.2987527188132176
2017	0.2915368621068943
2018	0.2891618504459158
2019	0.28188717205080005
2020	0.2809690621593711