Year	Percent
1996-01-01	43.682900000000000
1997-01-01	40.687200000000000
1998-01-01	52.362100000000000
1999-01-01	71.091700000000000
2000-01-01	66.340300000000000
2001-01-01	52.775200000000000
2002-01-01	47.937600000000000
2003-01-01	45.044500000000000
2004-01-01	43.747700000000000
2005-01-01	43.741800000000000
2006-01-01	42.475400000000000
2007-01-01	36.364000000000004
2008-01-01	39.325000000000000
2009-01-01	41.136100000000000
2010-01-01	38.138700000000000
2011-01-01	37.994900000000000
2012-01-01	33.593200000000000
2013-01-01	33.515600000000000
2014-01-01	31.200600000000000