Year	Percent
1996-01-01	30.891500000000000
1997-01-01	31.512800000000000
1998-01-01	37.138000000000005
1999-01-01	39.418200000000000
2000-01-01	44.721200000000000
2001-01-01	50.000000000000000
2002-01-01	39.139200000000000
2003-01-01	34.622200000000000
2004-01-01	37.951700000000000
2005-01-01	34.716600000000000
2006-01-01	38.980500000000000
2007-01-01	36.405000000000000
2008-01-01	27.009000000000000
2009-01-01	32.680200000000000
2010-01-01	35.295000000000000
2011-01-01	34.574000000000000
2012-01-01	39.405900000000000
2013-01-01	35.931500000000000
2014-01-01	27.447800000000000