Year	Percent
1996-01-01	90.2256
1997-01-01	55.2083
1998-01-01	43.4298
1999-01-01	47.0126
2000-01-01	54.2216
2001-01-01	49.7967
2002-01-01	42.0408
2003-01-01	52.0481
2004-01-01	62.0980
2005-01-01	73.3015
2006-01-01	78.1201
2007-01-01	71.6279
2008-01-01	58.3049
2009-01-01	63.5480
2010-01-01	65.0881
2011-01-01	61.3520
2012-01-01	69.7612
2013-01-01	64.0645
2014-01-01	59.1824