Year	Percent
1996-01-01	82.5539
1997-01-01	86.7757
1998-01-01	74.5443
1999-01-01	74.7955
2000-01-01	48.6676
2001-01-01	68.5608
2002-01-01	81.2645
2003-01-01	71.9958
2004-01-01	53.7699
2005-01-01	72.2299
2006-01-01	65.8164
2007-01-01	69.3250
2008-01-01	66.4297
2009-01-01	68.5549
2010-01-01	60.1210
2011-01-01	54.2535
2012-01-01	61.7413
2013-01-01	68.4750
2014-01-01	82.1142