Year	current US$
2000	123.87416722
2001	142.69661411
2002	123.91662816
2003	127.42514027
2004	133.26428733
2005	136.17706509
2006	151.22960904
2007	179.59508759
2008	211.40855012
2009	235.65248546
2010	266.41452041
2011	198.01413084