Year	Percent
1996-01-01	4.2589500000000000
1997-01-01	4.1769800000000000
1998-01-01	8.0445100000000000
1999-01-01	6.3264900000000000
2000-01-01	6.5666600000000010
2001-01-01	6.6020000000000000
2002-01-01	6.2354500000000000
2003-01-01	6.2881000000000000
2004-01-01	5.4905000000000000
2005-01-01	5.8351000000000000
2006-01-01	6.6442300000000000
2007-01-01	5.8303100000000000
2008-01-01	5.6384700000000000
2009-01-01	5.8739300000000005
2010-01-01	2.5996799999999998
2011-01-01	6.2024400000000000
2012-01-01	6.6199600000000010
2013-01-01	5.4224700000000000
2014-01-01	10.5574000000000000
2015-01-01	4.9890400000000000
2016-01-01	4.8786300000000000