Year	Percent
1989-01-01	104
1990-01-01	48.00
1991-01-01	36.00
1992-01-01	32.00
1993-01-01	29.00
1994-01-01	28.00
1995-01-01	25.00
1996-01-01	22.00
1997-01-01	24.50
1998-01-01	18.25
1999-01-01	19.00
2000-01-01	21.50
2001-01-01	14.00
2002-01-01	7.50
2003-01-01	5.75
2004-01-01	7.00
2005-01-01	4.75
2006-01-01	4.25
2007-01-01	5.25
2008-01-01	5.25
2009-01-01	3.75
2010-01-01	3.75
2011-01-01	4.75
2012-01-01	4.50
2013-01-01	2.75
2014-01-01	2.25
2015-01-01	1.75
2016-01-01	1.75
2017-01-01	1.75