Year	Percent
1996-01-01	8.151180000000000
1997-01-01	10.773100000000000
1998-01-01	11.597000000000001
1999-01-01	17.542400000000000
2000-01-01	20.101300000000000
2001-01-01	21.750500000000000
2002-01-01	19.395300000000000
2003-01-01	17.865000000000000
2004-01-01	10.250900000000000
2005-01-01	12.374800000000000
2006-01-01	17.877300000000000
2007-01-01	17.355700000000000
2008-01-01	19.545900000000000
2009-01-01	18.306200000000000
2010-01-01	17.580300000000000
2011-01-01	16.209300000000000
2012-01-01	17.875500000000000
2013-01-01	17.340200000000000
2014-01-01	18.267400000000000
2015-01-01	17.838400000000000
2016-01-01	18.074600000000000