Year	Percent
1996-01-01	2.6483400000000000
1997-01-01	2.7496400000000003
1998-01-01	2.9459100000000000
1999-01-01	2.9407500000000000
2000-01-01	2.6964900000000003
2001-01-01	3.0158099999999997
2002-01-01	3.3769800000000000
2003-01-01	3.1624800000000000
2004-01-01	2.8176799999999997
2005-01-01	3.1032700000000000
2006-01-01	3.0151200000000000
2007-01-01	2.7740700000000000
2008-01-01	2.7200700000000000
2009-01-01	2.6589700000000000
2010-01-01	3.1828800000000000
2011-01-01	3.3400300000000005
2012-01-01	2.8323099999999997
2013-01-01	2.8946400000000003
2014-01-01	2.7082800000000000
2015-01-01	2.5445900000000004
2016-01-01	2.7761800000000000