Year	Percent
1996-01-01	24.531400000000000
1997-01-01	20.344700000000000
1998-01-01	15.368100000000000
1999-01-01	11.013400000000000
2000-01-01	16.252500000000000
2001-01-01	16.925300000000000
2002-01-01	14.973900000000000
2003-01-01	17.461200000000000
2004-01-01	18.301100000000000
2005-01-01	20.750100000000000
2006-01-01	18.703600000000000
2007-01-01	23.548200000000000
2008-01-01	14.515999999999998
2009-01-01	19.402900000000000
2010-01-01	22.125500000000000
2011-01-01	18.313200000000000
2012-01-01	16.777600000000000
2013-01-01	15.439300000000000
2014-01-01	16.927700000000000
2015-01-01	13.883800000000000
2016-01-01	13.008400000000000