Year	kg per PPP $ of GDP
1990	0.48534135796826317
1991	0.44970338593359505
1992	0.45336762304111566
1993	0.46841517617522904
1994	0.49075339644434834
1995	0.4851475746273021
1996	0.4606475297993112
1997	0.46055071876730846
1998	0.4193650652922409
1999	0.40974063654821685
2000	0.3944890247012223
2001	0.3940046902772504
2002	0.38327182532393866
2003	0.3797578835988169
2004	0.36437653824038374
2005	0.365087046035373
2006	0.3528951990904594
2007	0.33656453146978865
2008	0.33185767658477333
2009	0.3343863118535897
2010	0.31986729606944164
2011	0.31545356984836725
2012	0.3184595261732558
2013	0.3229182678149784
2014	0.33262027915989073
2015	0.3432316280551471
2016	0.33884802557417554
2017	0.3322961068079275
2018	0.3187570444638938
2019	0.3117363399226325
2020	0.28746477955964483