Year	kg per 2010 US$ of GDP
1992	1.08703259436698
1993	1.04276845472542
1994	0.960591795021949
1995	0.890641389226061
1996	0.865234203432614
1997	0.88453897219295
1998	0.853537401946157
1999	0.768910277246683
2000	0.815643194771762
2001	0.791767294625214
2002	0.75389402447132
2003	0.741714271319695
2004	0.676415604371645
2005	0.653056326647288
2006	0.621339044201273
2007	0.594134752322553
2008	0.547434008247437
2009	0.530692796312923
2010	0.537789801375356
2011	0.506272226579195
2012	0.482293008927605
2013	0.473343929241193
2014	0.450556471822211