Year	Percent
1994-01-01	6.8365899999999990
1995-01-01	5.9594200000000000
1996-01-01	5.7418600000000000
1997-01-01	5.5325100000000000
1998-01-01	11.5964000000000000
1999-01-01	10.5395000000000000
2000-01-01	9.6605100000000000
2001-01-01	9.1415500000000000
2002-01-01	8.0386700000000000
2003-01-01	6.3776199999999990
2004-01-01	5.5750000000000000
2005-01-01	4.9727500000000000
2006-01-01	4.4249600000000000
2007-01-01	3.5403800000000003
2008-01-01	2.8962400000000000
2009-01-01	2.9314500000000000
2010-01-01	2.8600700000000000
2011-01-01	2.6302500000000000
2012-01-01	2.7162900000000003
2013-01-01	2.4640400000000002
2014-01-01	2.2286099999999998
2015-01-01	2.4305900000000000
2016-01-01	2.7547800000000000