Year	Percent
1996-01-01	10.116400000000000
1997-01-01	3.586410000000000
1998-01-01	5.031540000000001
1999-01-01	4.462140000000000
2000-01-01	4.897069999999999
2001-01-01	4.647740000000000
2002-01-01	4.727770000000000
2003-01-01	4.328050000000000
2004-01-01	4.256200000000000
2005-01-01	3.381950000000000
2006-01-01	3.224520000000000
2007-01-01	2.989410000000000
2008-01-01	2.764190000000000
2009-01-01	2.592920000000000
2010-01-01	2.420040000000000
2011-01-01	2.435450000000000
2012-01-01	2.414920000000000
2013-01-01	2.312240000000000
2014-01-01	2.138590000000000
2015-01-01	2.208100000000000
2016-01-01	2.304200000000000