Year	Percent
2000-01-01	47.939300000000000
2001-01-01	65.076200000000000
2002-01-01	48.183400000000000
2003-01-01	47.082100000000000
2004-01-01	47.939100000000000
2005-01-01	44.071000000000005
2006-01-01	38.312200000000000
2007-01-01	39.177600000000000
2008-01-01	40.326700000000000
2009-01-01	54.137100000000000
2010-01-01	52.578300000000000
2011-01-01	48.805600000000000
2012-01-01	47.920600000000000
2013-01-01	46.897900000000000
2014-01-01	46.868300000000000