Year	Percent
1992	77.00665
1993	83.56974
1994	106.64143
1995	93.42308
1996	93.8668
1997	84.77908
1998	71.89553
1999	77.07702
2000	71.9169
2001	58.74781
2002	80.86326
2003	50.49804
2004	44.29992
2005	45.63986
2006	41.88292
2007	39.6988
2008	44.26931
2009	32.36933
2010	31.78968
2011	52.91939