Year	Percent
1995-01-01	4.3454000000000000
1996-01-01	3.7506199999999996
1997-01-01	4.0663400000000000
1998-01-01	4.4132200000000000
1999-01-01	5.9486300000000005
2000-01-01	8.0135000000000000
2001-01-01	7.3601700000000000
2002-01-01	9.3178300000000000
2003-01-01	8.0333000000000000
2004-01-01	7.4209200000000000
2005-01-01	5.8918000000000000
2006-01-01	6.1867500000000000
2007-01-01	7.7805100000000005
2008-01-01	6.4244600000000000
2009-01-01	1.5606799999999998
2010-01-01	1.5445300000000000
2011-01-01	4.8642300000000000
2012-01-01	4.9208099999999995
2013-01-01	4.7134700000000000
2014-01-01	6.5340800000000000
2015-01-01	7.3310200000000000
2016-01-01	6.8102700000000000