Year	Percent
1996-01-01	17.7885
1997-01-01	17.8161
1998-01-01	21.9033
1999-01-01	33.3333
2000-01-01	27.8689
2001-01-01	27.7778
2002-01-01	27.4194
2003-01-01	71.4286
2004-01-01	57.3529
2005-01-01	40.9635
2006-01-01	28.2700
2007-01-01	18.5819
2008-01-01	18.5819
2009-01-01	79.6610
2010-01-01	21.7055
2011-01-01	61.3408
2012-01-01	63.5068
2013-01-01	65.4157
2014-01-01	62.2694