Year	Percent
1991-01-01	1.2519900000000000
1992-01-01	1.3000700000000000
1993-01-01	1.4070100000000000
1994-01-01	1.4977500000000000
1995-01-01	1.4378700000000000
1996-01-01	1.5120900000000000
1997-01-01	1.5150600000000000
1998-01-01	1.6404700000000000
1999-01-01	1.5609700000000000
2000-01-01	1.1470100000000000
2001-01-01	1.3507700000000000
2002-01-01	1.4828700000000001
2003-01-01	1.4885700000000002
2004-01-01	1.4453000000000000
2005-01-01	1.2886799999999998
2006-01-01	1.1619899999999999
2007-01-01	1.0438100000000001
2008-01-01	1.1388700000000000
2009-01-01	1.1254100000000000
2010-01-01	1.2077799999999999
2011-01-01	1.1205000000000000
2012-01-01	1.1435400000000000
2013-01-01	0.9807100000000001
2014-01-01	1.0185500000000000
2015-01-01	1.0925100000000000