Year	Percent
1995-01-01	3.6549699999999996
1996-01-01	5.3168600000000000
1997-01-01	8.4117100000000010
1998-01-01	10.2059000000000000
1999-01-01	12.6322000000000000
2000-01-01	13.7285000000000000
2001-01-01	12.8905000000000000
2002-01-01	11.6158000000000000
2003-01-01	10.4664000000000000
2004-01-01	9.4006300000000000
2005-01-01	8.0450000000000000
2006-01-01	6.6655300000000000
2007-01-01	5.2339000000000000
2008-01-01	4.4499600000000000
2009-01-01	4.1927800000000000
2010-01-01	3.5648600000000000
2011-01-01	2.9311200000000000
2012-01-01	2.3335600000000000
2013-01-01	1.9523000000000000
2014-01-01	1.7990500000000000
2015-01-01	1.6273200000000000
2016-01-01	1.4797600000000000