Year	Percent
1996-01-01	74.21600000000001
1997-01-01	75.52440000000000
1998-01-01	77.65770000000000
1999-01-01	83.66520000000000
2000-01-01	69.45210000000000
2001-01-01	73.32960000000000
2002-01-01	83.76250000000000
2003-01-01	95.40200000000000
2004-01-01	84.71890000000000
2005-01-01	67.17699999999999
2006-01-01	64.38960000000000
2007-01-01	66.82790000000000
2008-01-01	65.27960000000000
2009-01-01	62.95930000000000
2010-01-01	58.65100000000000
2011-01-01	51.63910000000000
2012-01-01	51.36000000000000
2013-01-01	57.15530000000000
2014-01-01	58.49490000000000
2015-01-01	58.38890000000000
2016-01-01	62.12230000000000