Year	$ 2011 PPP (%)
2001	1.397862
2002	1.291395
2004	1.279556
2005	1.108962
2006	1.24816
2007	1.618298
2009	1.601321
2010	1.490329
2011	1.06298
2012	0.9514505
2013	1.035238
2014	1.044519
2015	0.6560707