Year	Percent
1996-01-01	2.8867599999999998
1997-01-01	2.3271500000000000
1998-01-01	2.3255300000000000
1999-01-01	2.0244200000000000
2000-01-01	2.1866000000000000
2001-01-01	2.2520100000000000
2002-01-01	2.4884000000000000
2003-01-01	2.1324900000000000
2004-01-01	1.3726900000000000
2005-01-01	1.6891800000000000
2006-01-01	2.0373099999999997
2007-01-01	1.4852200000000000
2008-01-01	1.2838800000000000
2009-01-01	1.4067300000000000
2010-01-01	1.3745900000000000
2011-01-01	1.5135000000000000
2012-01-01	1.6167100000000000
2013-01-01	1.3582000000000000
2014-01-01	1.2432800000000000
2015-01-01	1.2570800000000000
2016-01-01	1.4431600000000000