Year	Percent
1978-01-01	1.1228600000000000
1979-01-01	1.1228600000000000
1980-01-01	1.1228600000000000
1981-01-01	1.1228600000000000
1982-01-01	1.1228600000000000
1983-01-01	1.1228600000000000
1984-01-01	0.5543319999999999
1985-01-01	0.6643240000000000
1986-01-01	0.6643240000000000
1987-01-01	1.1672100000000000
1988-01-01	1.1672100000000000
1989-01-01	-0.8558750000000000
1990-01-01	-0.7892660000000000
1991-01-01	-0.7892660000000000
1992-01-01	-0.7721220000000000
1993-01-01	2.6769500000000000
1994-01-01	-1.0308800000000000
1995-01-01	-1.0308800000000000
1996-01-01	2.6043800000000000
1997-01-01	-1.7428400000000002
1998-01-01	-1.7428400000000002
1999-01-01	-1.7428400000000002
2000-01-01	-1.5329300000000000
2001-01-01	1.6997400000000003
2002-01-01	1.6997400000000003
2003-01-01	1.6997400000000003
2004-01-01	1.6997400000000003
2005-01-01	1.6997400000000003
2006-01-01	-0.8165899999999999
2007-01-01	-0.8165899999999999
2008-01-01	-0.8165899999999999
2009-01-01	-1.1994700000000000
2010-01-01	-1.1994700000000000
2011-01-01	-1.1994700000000000
2012-01-01	-1.1994700000000000
2013-01-01	2.0804800000000000
2014-01-01	2.0804800000000000
2015-01-01	2.0804800000000000
2016-01-01	2.7403900000000000