Year	Percent
1996-01-01	37.943400000000000
1997-01-01	32.568700000000000
1998-01-01	39.739900000000000
1999-01-01	42.926300000000000
2000-01-01	42.130200000000000
2001-01-01	43.856800000000000
2002-01-01	40.658900000000000
2003-01-01	41.920000000000000
2004-01-01	41.979500000000000
2005-01-01	43.205200000000000
2006-01-01	39.539000000000000
2007-01-01	34.727600000000000
2008-01-01	33.582900000000000
2009-01-01	33.453700000000000
2010-01-01	30.085200000000000
2011-01-01	27.383600000000000
2012-01-01	30.762700000000000
2013-01-01	30.828000000000003
2014-01-01	29.751500000000000