Year	kg per 2010 US$ of GDP
2000	0.240996081983937
2001	0.272845006978462
2002	0.260987830437721
2003	0.398896557100659
2004	0.459885651286221
2005	0.514819385483767
2006	0.490930022196159
2007	0.399858921210663
2008	0.315777673618865
2009	0.274567555366167
2010	0.396432432432432
2011	0.412184223486996
2012	0.439788872368769
2013	0.377121311255029
2014	0.365886465149563