Year	Percent
1971-01-01	0.13633199999999998
1972-01-01	0.13633199999999998
1973-01-01	0.13633199999999998
1974-01-01	0.32160700000000003
1975-01-01	0.05961400000000000
1976-01-01	0.07422800000000000
1977-01-01	0.45775000000000000
1978-01-01	0.02209700000000000
1979-01-01	-0.07949200000000000
1980-01-01	0.15415600000000000
1981-01-01	0.12651199999999999
1982-01-01	0.23648700000000000
1983-01-01	0.13796600000000000
1984-01-01	0.35333200000000003
1985-01-01	0.13731400000000002
1986-01-01	0.48008400000000000
1987-01-01	-0.10623400000000000
1988-01-01	0.16243300000000000
1989-01-01	0.22937600000000002
1990-01-01	0.24660500000000002
1991-01-01	0.53290799999999990
1992-01-01	0.30167700000000000
1993-01-01	0.62829899999999990
1994-01-01	0.41625300000000000
1995-01-01	0.49358500000000005
1996-01-01	1.15570000000000000
1997-01-01	0.92867800000000010
1998-01-01	2.24984000000000030
1999-01-01	1.46862999999999990
2000-01-01	8.42427000000000000
2001-01-01	4.46066000000000000
2002-01-01	2.60954000000000000
2003-01-01	4.91061000000000000
2004-01-01	3.19723000000000000
2005-01-01	6.08680000000000000
2006-01-01	5.44279000000000050
2007-01-01	0.58218800000000000
2008-01-01	2.26995999999999980
2009-01-01	0.20817500000000000
2010-01-01	1.38859000000000000
2011-01-01	4.91062000000000000
2012-01-01	0.45684500000000000
2013-01-01	-5.44319000000000000
2014-01-01	-0.82852500000000000
2015-01-01	-3.40304000000000030
2016-01-01	-4.11089000000000000