Year	Percent
1996-01-01	1.7519900000000002
1997-01-01	1.7943799999999999
1998-01-01	1.8268799999999998
1999-01-01	1.9270100000000000
2000-01-01	2.0957200000000000
2001-01-01	2.0529400000000000
2002-01-01	2.0322900000000000
2003-01-01	2.1714400000000000
2004-01-01	2.2025600000000000
2005-01-01	2.1742600000000000
2006-01-01	2.0711600000000000
2007-01-01	1.5381700000000000
2008-01-01	1.6849700000000000
2009-01-01	1.9632599999999998
2010-01-01	2.0935300000000000
2011-01-01	1.9778099999999998
2012-01-01	1.9045100000000000
2013-01-01	1.8606700000000000
2014-01-01	1.7283099999999998
2015-01-01	1.5910000000000000
2016-01-01	1.3720299999999999