Year	Percent
1996-01-01	41.18120000000000
1997-01-01	43.09460000000000
1998-01-01	42.03110000000000
1999-01-01	47.31250000000000
2000-01-01	56.46910000000000
2001-01-01	50.41480000000000
2002-01-01	54.17630000000000
2003-01-01	55.08820000000000
2004-01-01	75.19520000000000
2005-01-01	74.69670000000000
2006-01-01	67.08550000000000
2007-01-01	61.64310000000000
2008-01-01	58.75540000000000
2009-01-01	52.91340000000000
2010-01-01	53.37370000000000
2011-01-01	58.96730000000000
2012-01-01	61.82380000000000
2013-01-01	59.00899999999999
2014-01-01	73.03570000000000