Year	Percent
1996-01-01	47.058800000000000
1997-01-01	50.000000000000000
1998-01-01	46.666700000000000
1999-01-01	47.368400000000000
2000-01-01	55.263200000000000
2001-01-01	62.162200000000000
2002-01-01	67.272700000000000
2003-01-01	70.212800000000000
2004-01-01	54.887200000000000
2005-01-01	42.574300000000000
2006-01-01	44.814800000000000
2007-01-01	43.046400000000000
2008-01-01	39.681600000000000
2009-01-01	33.123000000000005
2010-01-01	35.115700000000000
2011-01-01	36.342400000000000
2012-01-01	35.431000000000000
2013-01-01	32.469600000000000
2014-01-01	21.765200000000000