Year	Percent
1999-01-01	1.2778800000000000
2000-01-01	1.0474100000000000
2001-01-01	1.0998100000000000
2002-01-01	0.7962319999999999
2003-01-01	1.4142900000000000
2004-01-01	0.9606389999999999
2005-01-01	0.9113969999999999
2006-01-01	0.8439490000000000
2007-01-01	0.9827340000000000
2008-01-01	1.2446700000000002
2009-01-01	1.2632500000000000
2010-01-01	1.4275200000000001
2011-01-01	1.4408100000000001
2012-01-01	1.4053200000000001
2013-01-01	1.5517400000000000
2014-01-01	1.5577900000000000