Year	Percent
2000-01-01	50.1934992691973
2001-01-01	50.9492250000000
2002-01-01	51.1638800000000
2003-01-01	50.6420600000000
2004-01-01	50.2883825000000
2005-01-01	50.3551375000000
2006-01-01	51.1780850000000
2007-01-01	52.3091725000000
2008-01-01	53.0723300000000
2009-01-01	52.9874250000000
2010-01-01	51.1931700000000
2011-01-01	51.0277375000000
2012-01-01	51.0338075000000
2013-01-01	50.3230550000000