Year	Percent
1996-01-01	6.0489500000000000
1997-01-01	5.6601099999999995
1998-01-01	4.8087100000000000
1999-01-01	6.4473500000000000
2000-01-01	9.9806100000000000
2001-01-01	7.7705500000000000
2002-01-01	10.9285000000000000
2003-01-01	9.3814500000000000
2004-01-01	8.8008100000000000
2005-01-01	7.0393000000000000
2006-01-01	7.8798699999999995
2007-01-01	8.3041000000000000
2008-01-01	5.4158000000000000
2009-01-01	4.6307500000000000
2010-01-01	3.4258400000000000
2011-01-01	3.6905200000000000
2012-01-01	3.9426200000000000
2013-01-01	3.5908200000000000
2014-01-01	3.1601200000000000
2015-01-01	4.7866000000000000
2016-01-01	4.1114300000000000