Year	Percent
1969-01-01	0.21087500000000000
1970-01-01	0.21087500000000000
1971-01-01	0.21087500000000000
1972-01-01	0.21087500000000000
1973-01-01	0.21087500000000000
1974-01-01	0.21087500000000000
1975-01-01	0.21087500000000000
1976-01-01	0.10490300000000000
1977-01-01	0.10490300000000000
1978-01-01	0.10490300000000000
1979-01-01	0.43356300000000003
1980-01-01	0.01960700000000000
1981-01-01	0.13771400000000000
1982-01-01	0.06156200000000000
1983-01-01	0.44494700000000004
1984-01-01	0.57401499999999990
1985-01-01	0.27095600000000000
1986-01-01	0.46410900000000000
1987-01-01	-0.07789900000000000
1988-01-01	0.33339900000000000
1989-01-01	0.84312500000000000
1990-01-01	0.45487400000000000
1991-01-01	1.18315000000000000
1992-01-01	0.46772100000000000
1993-01-01	1.20925000000000000
1994-01-01	1.11131000000000000
1995-01-01	1.37412000000000000
1996-01-01	1.15156000000000010
1997-01-01	0.30257399999999995
1998-01-01	-0.03338400000000000
1999-01-01	0.18293399999999999
2000-01-01	1.22528000000000000
2001-01-01	-0.71223800000000000
2002-01-01	-0.11318800000000001
2003-01-01	1.09842000000000020
2004-01-01	0.82289700000000000
2005-01-01	0.41975800000000000
2006-01-01	4.98886000000000000
2007-01-01	2.85341000000000000
2008-01-01	3.53415000000000000
2009-01-01	1.17160000000000000
2010-01-01	-0.96288300000000000
2011-01-01	-2.79218000000000000
2012-01-01	-0.37759800000000000
2013-01-01	6.54220000000000000
2014-01-01	0.71006800000000000
2015-01-01	1.76120000000000000
2016-01-01	-0.95799700000000000