Year	Percent
2001-01-01	16.600000000000000
2002-01-01	12.500000000000000
2003-01-01	2.900000000000000
2004-01-01	14.000000000000000
2005-01-01	14.000000000000000
2006-01-01	13.700000000000000
2007-01-01	17.800000000000000
2008-01-01	15.900000000000000
2009-01-01	19.000000000000000
2010-01-01	24.682000000000000
2011-01-01	24.961800000000000
2012-01-01	23.850400000000000
2013-01-01	23.073400000000000
2014-01-01	24.171999999999997
2015-01-01	22.521000000000000
2016-01-01	23.051300000000000