Year	kg per 2011 PPP $ of GDP
1992	1.99687883563288
1993	2.12479915916933
1994	2.09540033798094
1995	2.01267954420881
1996	2.03137616109505
1997	1.95030693774225
1998	2.07758983201144
1999	2.05698364030124
2000	1.96158667858627
2001	1.90828484779999
2002	1.90813686044021
2003	1.81344453636319
2004	1.67541057089576
2005	1.45525518536981
2006	1.38945215203678
2007	1.26829035966449
2008	1.19906522103265
2009	0.959528080743792
2010	0.860064949048181
2011	0.866846330371999
2012	0.816318810737802
2013	0.674366473417201
2014	0.640512304362149