Year	Percent
2001-01-01	1.6869999999999998
2002-01-01	1.6869999999999998
2003-01-01	0.9300000000000000
2004-01-01	3.7880000000000003
2005-01-01	4.4030000000000005
2006-01-01	5.7900000000000000
2007-01-01	8.2400000000000000
2008-01-01	7.9500000000000000
2009-01-01	7.7800000000000000
2010-01-01	6.9300000000000000
2011-01-01	6.3400000000000000
2012-01-01	6.7700000000000000
2013-01-01	9.4200000000000000
2014-01-01	9.6700000000000000
2015-01-01	9.5600000000000000
2016-01-01	9.4700000000000000