Year	Percent
1999-01-01	9.0771699999999990
2000-01-01	10.4253000000000000
2001-01-01	9.5254100000000000
2002-01-01	8.5700300000000010
2003-01-01	6.7569700000000000
2004-01-01	7.3151500000000000
2005-01-01	7.8215500000000000
2006-01-01	9.1572000000000000
2007-01-01	8.3503700000000000
2008-01-01	5.9668500000000000
2009-01-01	6.8157200000000000
2010-01-01	7.3695699999999995
2011-01-01	8.4660800000000000
2012-01-01	12.4660000000000000
2013-01-01	12.2297000000000000
2014-01-01	13.9880000000000000
2015-01-01	12.3450000000000000
2016-01-01	12.4419000000000000