Year	Percent
1995-01-01	4.859300000000000
1996-01-01	9.626360000000000
1997-01-01	13.966900000000000
1998-01-01	8.800000000000000
1999-01-01	9.897260000000001
2000-01-01	9.529370000000000
2001-01-01	9.876950000000000
2002-01-01	11.104900000000000
2003-01-01	11.964800000000000
2004-01-01	22.018600000000000
2005-01-01	18.676400000000000
2006-01-01	18.312800000000000
2007-01-01	17.861400000000000
2008-01-01	16.327000000000000
2009-01-01	16.649200000000000
2010-01-01	18.026800000000000
2011-01-01	17.734200000000000
2012-01-01	18.033000000000000
2013-01-01	19.711400000000000
2014-01-01	17.904400000000000
2015-01-01	14.132700000000000
2016-01-01	13.107500000000000
2017-01-01	13.340900000000000