Year	Percent
1990-01-01	1.8652900000000001
1991-01-01	1.8924000000000000
1992-01-01	1.9619099999999998
1993-01-01	2.1300000000000000
1994-01-01	1.7113900000000002
1995-01-01	1.5794000000000000
1996-01-01	1.5534200000000000
1997-01-01	1.4400100000000000
1998-01-01	1.3519900000000000
1999-01-01	1.2772500000000000
2000-01-01	1.2905400000000000
2001-01-01	1.3566900000000000
2002-01-01	1.4842899999999999
2003-01-01	1.6314200000000000
2004-01-01	1.6935600000000000
2005-01-01	1.6778600000000000
2006-01-01	1.5976500000000000
2007-01-01	1.5108500000000000
2008-01-01	1.4873299999999998
2009-01-01	1.5313900000000000
2010-01-01	1.4323299999999999
2011-01-01	1.3803100000000000
2012-01-01	1.4101400000000000
2013-01-01	1.4250399999999999
2014-01-01	1.4190600000000000
2015-01-01	1.2093000000000000
2016-01-01	1.5365100000000000