Year	Percent
2000-01-01	26.300000000000000
2001-01-01	25.100000000000000
2002-01-01	20.500000000000000
2003-01-01	20.300000000000000
2004-01-01	18.700000000000000
2005-01-01	17.800000000000000
2006-01-01	17.700000000000000
2007-01-01	17.100000000000000
2008-01-01	16.300000000000000
2009-01-01	16.100000000000000
2010-01-01	16.171400000000000
2011-01-01	17.072500000000000
2012-01-01	17.045700000000000
2013-01-01	17.843800000000000
2014-01-01	16.259200000000000
2015-01-01	14.860600000000000
2016-01-01	15.824000000000002