Year	Percent
1993-01-01	1.8746300000000000
1994-01-01	2.1829600000000000
1995-01-01	2.0037300000000000
1996-01-01	1.9297300000000000
1997-01-01	2.2708800000000000
1998-01-01	2.3694100000000000
1999-01-01	2.1208200000000000
2000-01-01	1.9478600000000000
2001-01-01	2.2949700000000000
2002-01-01	2.5524400000000003
2003-01-01	2.6799900000000000
2004-01-01	3.0358300000000000
2005-01-01	3.0914700000000000
2006-01-01	2.7546800000000000
2007-01-01	2.9474800000000000
2008-01-01	2.5771800000000000
2009-01-01	2.6355000000000000
2010-01-01	2.6472300000000000
2011-01-01	2.6225900000000000
2012-01-01	2.8384300000000000
2013-01-01	2.7421500000000000
2014-01-01	2.9259700000000000
2015-01-01	2.8911900000000000
2016-01-01	2.9764300000000000