Year	Percent
1974-01-01	5.15506999999999900
1975-01-01	7.71143000000000000
1976-01-01	7.71143000000000000
1977-01-01	7.71143000000000000
1978-01-01	7.71143000000000000
1979-01-01	4.37219000000000000
1980-01-01	4.37219000000000000
1981-01-01	4.37219000000000000
1982-01-01	4.37219000000000000
1983-01-01	4.37219000000000000
1984-01-01	4.37219000000000000
1985-01-01	8.69435000000000000
1986-01-01	8.69435000000000000
1987-01-01	4.17915999999999950
1988-01-01	2.41014000000000000
1989-01-01	-1.42857000000000010
1990-01-01	-5.55764000000000000
1991-01-01	-4.44698000000000000
1992-01-01	-2.20697000000000000
1993-01-01	4.18384000000000000
1994-01-01	-2.00192999999999980
1995-01-01	-1.60596000000000000
1996-01-01	-1.60596000000000000
1997-01-01	-3.04557999999999970
1998-01-01	-3.04557999999999970
1999-01-01	1.20119000000000000
2000-01-01	5.55566000000000000
2001-01-01	5.55566000000000000
2002-01-01	1.30178000000000000
2003-01-01	0.09769800000000001
2004-01-01	3.79231000000000000
2005-01-01	-5.21965000000000000
2006-01-01	-2.29986000000000000
2007-01-01	-3.95540000000000000
2008-01-01	-3.95540000000000000
2009-01-01	8.56911000000000000
2010-01-01	8.56911000000000000
2011-01-01	8.56911000000000000
2012-01-01	8.56911000000000000
2013-01-01	3.45759000000000000
2014-01-01	3.45759000000000000
2015-01-01	1.63774000000000000