Year	Percent
1972-01-01	0.5333190000000000
1973-01-01	0.5333190000000000
1974-01-01	0.5333190000000000
1975-01-01	0.5333190000000000
1976-01-01	0.5333190000000000
1977-01-01	0.5333190000000000
1978-01-01	0.5333190000000000
1979-01-01	-0.4123650000000000
1980-01-01	-0.4123650000000000
1981-01-01	-0.4123650000000000
1982-01-01	-0.4123650000000000
1983-01-01	-0.4123650000000000
1984-01-01	-0.4123650000000000
1985-01-01	-0.4123650000000000
1986-01-01	-0.4123650000000000
1987-01-01	-0.4123650000000000
1988-01-01	-0.4123650000000000
1989-01-01	-0.4123650000000000
1990-01-01	-0.4123650000000000
1991-01-01	-0.4123650000000000
1992-01-01	-0.4123650000000000
1993-01-01	-0.4123650000000000
1994-01-01	-0.4123650000000000
1995-01-01	-0.4123650000000000
1996-01-01	1.1530600000000000
1997-01-01	-0.0671110000000000
1998-01-01	-0.0671110000000000
1999-01-01	-0.7958380000000000
2000-01-01	-0.7958380000000000
2001-01-01	2.7509000000000000
2002-01-01	2.7509000000000000
2003-01-01	2.7509000000000000
2004-01-01	1.8323400000000000
2005-01-01	2.2312600000000000
2006-01-01	1.6798900000000000
2007-01-01	1.1696700000000000
2008-01-01	1.1696700000000000
2009-01-01	4.1532300000000010
2010-01-01	2.2741700000000002
2011-01-01	3.9750900000000002
2012-01-01	-9.4593500000000000
2013-01-01	3.5026300000000004
2014-01-01	-1.3455400000000000