Year	$ 2011 PPP (USD)
1984	0
1989	0
1992	0
1994	0.0224703
1996	0.0262424
1998	0.0190275
2000	0.0167571
2002	0.0165782
2004	0.0131111
2008	0.0073467
2010	0.0052898
2012	0.0066349