Year	Percent
1996-01-01	3.9996500000000000
1997-01-01	3.2743100000000000
1998-01-01	5.5371600000000000
1999-01-01	4.7151400000000000
2000-01-01	4.2244400000000000
2001-01-01	3.7309699999999997
2002-01-01	4.3072300000000010
2003-01-01	3.8223800000000003
2004-01-01	6.3410699999999990
2005-01-01	5.7878700000000000
2006-01-01	5.8968000000000000
2007-01-01	5.6868300000000005
2008-01-01	5.2933000000000000
2009-01-01	6.3553900000000000
2010-01-01	6.2826600000000000
2011-01-01	7.4447399999999995
2012-01-01	6.1334200000000000
2013-01-01	6.0266600000000000
2014-01-01	5.6804300000000000
2015-01-01	4.9166099999999995
2016-01-01	5.3248600000000000