Year	Percent
1990-01-01	1.3153900000000000
1991-01-01	1.3222200000000002
1992-01-01	1.3751500000000000
1993-01-01	1.5214500000000000
1994-01-01	1.2215700000000000
1995-01-01	1.1611100000000000
1996-01-01	1.0627799999999998
1997-01-01	1.1830000000000000
1998-01-01	1.2766100000000000
1999-01-01	1.1640100000000000
2000-01-01	1.1043300000000000
2001-01-01	1.2676600000000000
2002-01-01	1.2894600000000000
2003-01-01	1.5044700000000000
2004-01-01	1.3899600000000000
2005-01-01	1.2912600000000000
2006-01-01	1.3835600000000001
2007-01-01	1.6410099999999999
2008-01-01	1.8119500000000000
2009-01-01	1.9493200000000002
2010-01-01	1.8642200000000000
2011-01-01	1.6721800000000000
2012-01-01	1.7656200000000000
2013-01-01	1.9593099999999999
2014-01-01	2.6136700000000000
2015-01-01	3.5551199999999996
2016-01-01	2.8779100000000000