Year	Percent
1980-01-01	8.75000
1981-01-01	8.75000
1982-01-01	8.75000
1983-01-01	8.41667
1984-01-01	4.75000
1985-01-01	5.87500
1986-01-01	6.25000
1987-01-01	5.25000
1988-01-01	8.75000
1989-01-01	10.25000
1990-01-01	8.89583
1991-01-01	7.50000
1992-01-01	5.50000
1993-01-01	7.75000
1994-01-01	6.00000
1995-01-01	10.06250
1996-01-01	19.00000
1997-01-01	18.04170
1998-01-01	18.60420
1999-01-01	20.37500
2000-01-01	19.87500
2001-01-01	21.20830
2002-01-01	22.45830
2003-01-01	23.79170
2004-01-01	23.10420
2005-01-01	22.16670
2006-01-01	21.25000
2007-01-01	21.74140
2008-01-01	21.77780
2009-01-01	21.75000
2010-01-01	21.02080
2011-01-01	19.63710
2012-01-01	21.25370
2013-01-01	27.60150
2014-01-01	31.11500
2015-01-01	32.79250
2016-01-01	32.53850