Year	Percent
1999-01-01	5.0320000000000000
2000-01-01	4.6690000000000000
2001-01-01	5.1470000000000000
2002-01-01	5.4730000000000000
2003-01-01	4.9300000000000000
2004-01-01	3.4019999999999997
2005-01-01	6.6977400000000000
2006-01-01	5.9843900000000000
2007-01-01	5.6044800000000010
2008-01-01	4.4530100000000000
2009-01-01	4.5769400000000005
2010-01-01	4.1678100000000000
2011-01-01	3.9257600000000000
2012-01-01	7.6838300000000000
2013-01-01	12.2718000000000000
2014-01-01	13.7775000000000000
2015-01-01	13.9012000000000000
2016-01-01	14.9088000000000000