Year	current US$
2000	54.56182098
2001	58.60890198
2002	63.64098358
2003	60.61154175
2004	60.79922104
2005	62.79922867
2006	64.36579895
2007	72.40921021
2008	83.15718079
2009	87.92034149
2010	88.68951416
2011	74.85932159
2012	63.13696671