Year	kg per 2010 US$ of GDP
2006	1.423003518973
2007	1.29851541234072
2008	1.22058832394544
2009	1.11239603875961
2010	1.09888636650669
2011	1.15344007085905
2012	1.03969930212549
2013	1.02930709136978
2014	0.877762750265382