Year	Percent
1996-01-01	69.5998
1997-01-01	79.8983
1998-01-01	79.6992
1999-01-01	80.8729
2000-01-01	79.6462
2001-01-01	78.2973
2002-01-01	73.8928
2003-01-01	68.1532
2004-01-01	64.0224
2005-01-01	70.7910
2006-01-01	69.9544
2007-01-01	62.8470
2008-01-01	56.8857
2009-01-01	61.5313
2010-01-01	63.1389
2011-01-01	59.0234
2012-01-01	57.2946
2013-01-01	59.2776
2014-01-01	56.3102