Year	Percent
1993-01-01	7.7571900000000000
1994-01-01	7.5808399999999990
1995-01-01	8.2270399999999990
1996-01-01	7.9317699999999990
1997-01-01	9.2307500000000000
1998-01-01	8.8515400000000000
1999-01-01	8.1053699999999990
2000-01-01	8.1537600000000000
2001-01-01	6.8827000000000000
2002-01-01	6.4397199999999994
2003-01-01	6.2142700000000000
2004-01-01	6.1356800000000010
2005-01-01	6.6832300000000000
2006-01-01	6.8790000000000000
2007-01-01	7.1981800000000010
2008-01-01	6.6602000000000000
2009-01-01	6.6819700000000000
2010-01-01	6.5602600000000000
2011-01-01	6.6473500000000000
2012-01-01	8.3711200000000000
2013-01-01	5.4032700000000000
2014-01-01	7.4407399999999990
2015-01-01	7.5204900000000000
2016-01-01	7.4296899999999990