Year	Percent
1996-01-01	69.83610000000000
1997-01-01	83.95510000000000
1998-01-01	85.01030000000000
1999-01-01	92.26020000000000
2000-01-01	72.47750000000000
2001-01-01	70.97320000000000
2002-01-01	74.64960000000000
2003-01-01	86.60900000000000
2004-01-01	83.60290000000000
2005-01-01	67.69030000000000
2006-01-01	68.79340000000000
2007-01-01	56.31460000000000
2008-01-01	62.90110000000000
2009-01-01	64.22840000000000
2010-01-01	67.19760000000000
2011-01-01	69.74410000000000
2012-01-01	71.63240000000000
2013-01-01	68.19800000000001
2014-01-01	75.70750000000000