Year	Percent
1992-01-01	21.694600000000000
1993-01-01	20.396300000000000
1994-01-01	9.438690000000000
1995-01-01	10.020500000000000
1996-01-01	10.299000000000001
1997-01-01	11.353600000000000
1998-01-01	12.751300000000000
1999-01-01	13.629100000000000
2000-01-01	15.583100000000000
2001-01-01	18.233900000000000
2002-01-01	23.136500000000000
2003-01-01	28.525800000000000
2004-01-01	30.311700000000000
2005-01-01	34.865100000000000
2006-01-01	39.522600000000000
2007-01-01	42.040400000000000
2008-01-01	38.713000000000000
2009-01-01	35.634700000000000
2010-01-01	33.048800000000000
2011-01-01	33.788200000000000
2012-01-01	36.249200000000000
2013-01-01	40.578400000000000
2014-01-01	40.740000000000000
2015-01-01	37.426000000000000
2016-01-01	30.171500000000000