Year	Percent
1977-01-01	0.19572100000000000
1978-01-01	0.43565400000000000
1979-01-01	0.43565400000000000
1980-01-01	0.43565400000000000
1981-01-01	0.43565400000000000
1982-01-01	0.43565400000000000
1983-01-01	0.71854800000000000
1984-01-01	0.71854800000000000
1985-01-01	-0.28536800000000000
1986-01-01	-0.28536800000000000
1987-01-01	-0.10313199999999999
1988-01-01	1.94130999999999990
1989-01-01	1.94130999999999990
1990-01-01	-0.48817900000000000
1991-01-01	-0.48817900000000000
1992-01-01	-0.48817900000000000
1993-01-01	-0.48817900000000000
1994-01-01	-1.09388000000000000
1995-01-01	-1.09388000000000000
1996-01-01	-1.09388000000000000
1997-01-01	-1.09388000000000000
1998-01-01	-1.09388000000000000
1999-01-01	-1.09388000000000000
2000-01-01	-0.21422100000000000
2001-01-01	-0.21422100000000000
2002-01-01	-0.21422100000000000
2003-01-01	-0.21422100000000000
2004-01-01	-0.08017200000000001
2005-01-01	-0.08017200000000001
2006-01-01	-0.08017200000000001
2007-01-01	-0.08017200000000001
2008-01-01	-0.08025600000000000
2009-01-01	-0.08025600000000000
2010-01-01	-0.08025600000000000
2011-01-01	-0.08025600000000000
2012-01-01	0.67267400000000000
2013-01-01	0.67267400000000000
2014-01-01	0.96453099999999990