Year	Percent
1996-01-01	6.3689100000000000
1997-01-01	6.3914599999999995
1998-01-01	6.5573000000000000
1999-01-01	7.2841300000000000
2000-01-01	6.6178800000000000
2001-01-01	5.7332700000000000
2002-01-01	5.9065300000000000
2003-01-01	9.7189300000000000
2004-01-01	12.9740000000000000
2005-01-01	7.9991800000000000
2006-01-01	10.6139000000000000
2007-01-01	7.5151300000000000
2008-01-01	7.0921300000000000
2009-01-01	6.9940000000000000
2010-01-01	6.6829199999999990
2011-01-01	7.4421000000000000
2012-01-01	7.6086600000000000
2013-01-01	7.6536000000000000
2014-01-01	7.4509399999999990
2015-01-01	6.4398400000000000
2016-01-01	7.8327700000000000