Year	Percent
1996-01-01	24.561000000000000
1997-01-01	24.938100000000000
1998-01-01	22.129200000000000
1999-01-01	25.416700000000000
2000-01-01	25.510200000000000
2001-01-01	21.333300000000000
2002-01-01	22.549000000000000
2003-01-01	27.461100000000000
2004-01-01	27.001400000000000
2005-01-01	29.127200000000000
2006-01-01	57.336999999999996
2007-01-01	61.948000000000000
2008-01-01	55.474000000000000
2009-01-01	43.870000000000000
2010-01-01	45.692000000000000
2011-01-01	49.823000000000000
2012-01-01	35.668900000000000
2013-01-01	27.297100000000000
2014-01-01	27.224300000000000