Year	Percent
1996-01-01	1.6941200000000000
1997-01-01	1.3614800000000000
1998-01-01	1.2436800000000000
1999-01-01	1.4142000000000000
2000-01-01	2.0056400000000000
2001-01-01	1.7196599999999997
2002-01-01	2.1896700000000000
2003-01-01	2.3443200000000000
2004-01-01	2.0945200000000000
2005-01-01	1.5957299999999999
2006-01-01	1.8435099999999998
2007-01-01	2.1030300000000000
2008-01-01	1.7668400000000002
2009-01-01	2.9027400000000000
2010-01-01	4.0565800000000000
2011-01-01	3.2146800000000000
2012-01-01	1.8521900000000002
2013-01-01	1.7765700000000000
2014-01-01	1.7169400000000001
2015-01-01	1.6577800000000000
2016-01-01	1.7318200000000001