Year	kg per 2010 US$ of GDP
2007	1.48233684311959
2008	1.10277091618488
2009	0.930311196325512
2010	0.893771512067009
2011	0.733575734151768
2012	0.666362715411209
2013	0.541624437514993
2014	0.429784789280828