Year	Percent
1993-01-01	3.1534200000000000
1994-01-01	3.0603300000000000
1995-01-01	2.5431600000000000
1996-01-01	2.3493100000000000
1997-01-01	2.0693799999999998
1998-01-01	2.1558400000000000
1999-01-01	2.1330500000000000
2000-01-01	1.9642000000000000
2001-01-01	1.7310700000000000
2002-01-01	1.6287300000000000
2003-01-01	1.4572900000000000
2004-01-01	1.3257700000000001
2005-01-01	1.1335400000000000
2006-01-01	0.9867680000000000
2007-01-01	0.8614090000000000
2008-01-01	0.7713909999999999
2009-01-01	0.6538740000000000
2010-01-01	0.6019000000000000
2011-01-01	0.5494000000000000
2012-01-01	0.5033460000000000
2013-01-01	0.4621070000000000
2014-01-01	0.5515120000000000
2015-01-01	0.5683699999999999
2016-01-01	0.5167340000000000