Year	Percent
1994-01-01	4.9852800000000000
1995-01-01	4.0615600000000000
1996-01-01	3.7359699999999996
1997-01-01	4.0221400000000000
1998-01-01	3.4889900000000003
1999-01-01	3.4995000000000000
2000-01-01	3.1072599999999997
2001-01-01	3.0734000000000000
2002-01-01	3.8510900000000000
2003-01-01	5.8834800000000005
2004-01-01	7.1202800000000000
2005-01-01	9.0000100000000010
2006-01-01	9.8007900000000000
2007-01-01	9.2609300000000000
2008-01-01	7.9217200000000000
2009-01-01	11.9212000000000000
2010-01-01	11.8172000000000000
2011-01-01	11.3499000000000000
2012-01-01	13.9271000000000000
2013-01-01	13.3844000000000000
2014-01-01	11.2698000000000000
2015-01-01	12.2185000000000000
2016-01-01	12.5608000000000000