Year	Percent
1993-01-01	1.3384600000000000
1994-01-01	1.3484900000000000
1995-01-01	1.3145200000000001
1996-01-01	1.2864500000000000
1997-01-01	1.3615500000000000
1998-01-01	1.3937300000000000
1999-01-01	2.0220599999999997
2000-01-01	2.4000400000000000
2001-01-01	2.6793299999999998
2002-01-01	2.9027900000000000
2003-01-01	3.1574100000000000
2004-01-01	2.9853000000000000
2005-01-01	2.7670100000000000
2006-01-01	2.9323799999999998
2007-01-01	3.0026200000000003
2008-01-01	2.9277400000000000
2009-01-01	2.9410000000000003
2010-01-01	2.7564000000000000
2011-01-01	2.6879400000000000
2012-01-01	2.5516700000000000
2013-01-01	2.5254100000000000
2014-01-01	2.4629500000000000
2015-01-01	2.4856000000000000