Year	$ 2011 PPP (USD)
1991	0.0046149
1992	0.0282041
1993	0.0224636
1994	0.0022218
1995	0.0007689
1996	0.0021078
1997	0.0011201
2002	0.0021481
2003	0.0020651
2004	0.0024462