Year	Percent
1971-01-01	0.098940000000000000
1972-01-01	0.111918000000000000
1973-01-01	0.111918000000000000
1974-01-01	0.111918000000000000
1975-01-01	0.111918000000000000
1976-01-01	0.120150000000000000
1977-01-01	0.065107000000000000
1978-01-01	0.065107000000000000
1979-01-01	0.017755000000000000
1980-01-01	0.029724000000000000
1981-01-01	0.031643000000000000
1982-01-01	0.011255000000000000
1983-01-01	0.258671000000000000
1984-01-01	0.389196999999999960
1985-01-01	0.056572000000000004
1986-01-01	-0.171163000000000000
1987-01-01	-0.050962000000000000
1988-01-01	0.127420000000000000
1989-01-01	0.111452000000000000
1990-01-01	0.204260000000000000
1991-01-01	0.218729000000000000
1992-01-01	-0.025429000000000000
1993-01-01	0.583978000000000000
1994-01-01	0.362676999999999970
1995-01-01	0.429243000000000040
1996-01-01	1.092510000000000000
1997-01-01	0.423311000000000000
1998-01-01	0.440002000000000060
1999-01-01	1.178310000000000000
2000-01-01	0.703893000000000000
2001-01-01	1.924359999999999800
2002-01-01	0.861382000000000000
2003-01-01	3.169090000000000000
2004-01-01	1.551860000000000000
2005-01-01	4.689890000000000000
2006-01-01	2.670909999999999700
2007-01-01	1.569140000000000000
2008-01-01	1.833250000000000000
2009-01-01	0.559736000000000000
2010-01-01	-1.117060000000000000
2011-01-01	-0.578939000000000000
2012-01-01	0.704481000000000000
2013-01-01	1.051140000000000000
2014-01-01	-1.565460000000000000
2015-01-01	-0.329773999999999960
2016-01-01	-1.754850000000000000