Year	Percent
1973-01-01	0.002370000000000000
1974-01-01	0.002370000000000000
1975-01-01	0.002370000000000000
1976-01-01	0.002370000000000000
1977-01-01	0.002370000000000000
1978-01-01	0.002370000000000000
1979-01-01	0.002370000000000000
1980-01-01	0.002370000000000000
1981-01-01	0.071238000000000000
1982-01-01	0.071238000000000000
1983-01-01	0.071238000000000000
1984-01-01	0.019109000000000000
1985-01-01	0.081077000000000000
1986-01-01	0.018318000000000000
1987-01-01	0.041044000000000000
1988-01-01	0.003759000000000000
1989-01-01	0.115716000000000010
1990-01-01	0.072625000000000000
1991-01-01	-0.002251000000000000
1992-01-01	-0.068222000000000000
1993-01-01	0.097979000000000000
1994-01-01	-0.132235000000000000
1995-01-01	0.006751999999999999
1996-01-01	0.065006000000000000
1997-01-01	0.021447000000000000
1998-01-01	-0.002405000000000000
1999-01-01	-0.089463000000000000
2000-01-01	-0.089463000000000000
2001-01-01	-0.089463000000000000
2002-01-01	-0.100577000000000000
2003-01-01	0.016511000000000000
2004-01-01	0.268548000000000000
2005-01-01	0.195574000000000000
2006-01-01	0.256651000000000000
2007-01-01	0.274912000000000000
2008-01-01	0.052065999999999994
2009-01-01	0.229467000000000000
2010-01-01	0.155920000000000000
2011-01-01	-0.130825000000000000
2012-01-01	0.097448000000000000
2013-01-01	0.196044000000000000
2014-01-01	0.055861000000000000
2015-01-01	-0.067515999999999990
2016-01-01	-0.096873000000000000