Year	Percent
1996-01-01	7.7431600000000005
1997-01-01	5.1953300000000000
1998-01-01	3.5409300000000004
1999-01-01	3.3560500000000000
2000-01-01	9.7266100000000000
2001-01-01	7.1102600000000000
2002-01-01	7.1643600000000000
2003-01-01	7.4149400000000000
2004-01-01	7.0665400000000000
2005-01-01	6.8842500000000000
2006-01-01	6.8721399999999990
2007-01-01	6.6111500000000000
2008-01-01	5.8219199999999995
2009-01-01	4.6774900000000000
2010-01-01	5.6892500000000000
2011-01-01	5.8810900000000000
2012-01-01	6.0433500000000000
2013-01-01	5.5173600000000000
2014-01-01	4.9995900000000000
2015-01-01	4.1452800000000005
2016-01-01	5.5204600000000000