Year	Percent
1999	97.16797
2000	100.34213
2001	106.26822
2002	103.125
2003	106.28375
2004	100.19763
2005	90.8637
2006	97.16599
2007	92.26831
2008	93.59504
2009	93.87649
2010	93.1195
2011	97.38997