Year	Percent
1996-01-01	7.3885100000000010
1997-01-01	10.2713000000000000
1998-01-01	7.2153899999999990
1999-01-01	6.0643900000000000
2000-01-01	12.2060000000000000
2001-01-01	7.8225200000000000
2002-01-01	8.2948500000000000
2003-01-01	7.7660899999999990
2004-01-01	7.3702900000000000
2005-01-01	6.5537399999999995
2006-01-01	6.8815600000000000
2007-01-01	6.5805399999999990
2008-01-01	6.2568800000000010
2009-01-01	5.7622500000000000
2010-01-01	5.6966500000000000
2011-01-01	5.7995500000000000
2012-01-01	5.4153699999999990
2013-01-01	4.9896500000000000
2014-01-01	4.9917800000000000
2015-01-01	5.2397000000000000
2016-01-01	5.0986000000000000