Year	Percent
1996-01-01	39.743600000000000
1997-01-01	43.680200000000000
1998-01-01	49.134300000000000
1999-01-01	72.729800000000000
2000-01-01	58.312100000000000
2001-01-01	41.088900000000000
2002-01-01	35.068200000000000
2003-01-01	60.686200000000000
2004-01-01	54.038999999999994
2005-01-01	41.347900000000000
2006-01-01	37.736500000000000
2007-01-01	42.640800000000000
2008-01-01	18.912500000000000
2009-01-01	27.811300000000000
2010-01-01	34.591000000000000
2011-01-01	25.911900000000000
2012-01-01	33.006800000000000
2013-01-01	20.892700000000000
2014-01-01	22.185300000000000