Year	Percent
1996-01-01	20.150300000000000
1997-01-01	19.375200000000000
1998-01-01	19.512700000000000
1999-01-01	21.019100000000000
2000-01-01	17.891000000000000
2001-01-01	17.201000000000000
2002-01-01	15.706400000000000
2003-01-01	11.170400000000000
2004-01-01	11.422600000000000
2005-01-01	10.467300000000000
2006-01-01	10.914900000000000
2007-01-01	11.834500000000000
2008-01-01	11.091600000000000
2009-01-01	9.681280000000001
2010-01-01	8.476620000000000
2011-01-01	7.913200000000000
2012-01-01	7.206840000000000
2013-01-01	6.936389999999999
2014-01-01	6.750240000000000
2015-01-01	13.255900000000000
2016-01-01	15.130600000000000