Year	Percent
1991-01-01	1.37500000000000
1992-01-01	1.11099994182587
1993-01-01	1.12000000476837
1994-01-01	1.26300001144409
1995-01-01	1.32299995422363
1996-01-01	1.83899998664856
1997-01-01	1.91199994087219
1998-01-01	1.86800003051758
1999-01-01	2.08500003814697
2000-01-01	1.96599996089935
2001-01-01	1.90799999237061
2002-01-01	2.02200007438660
2003-01-01	1.97599995136261
2004-01-01	1.92700004577637
2005-01-01	1.79999995231628
2006-01-01	1.76499998569489
2007-01-01	1.79799997806549
2008-01-01	1.75399994850159
2009-01-01	1.95200002193451
2010-01-01	2.50600004196167
2011-01-01	1.49100005626678
2012-01-01	1.37100005149841
2013-01-01	1.13800001144409
2014-01-01	1.10300004482269
2015-01-01	1.14900004863739
2016-01-01	1.12999999523163
2017-01-01	1.10599994659424