Year	Percent
1978-01-01	0.3178800000000000000
1979-01-01	0.3178800000000000000
1980-01-01	0.3178800000000000000
1981-01-01	0.3178800000000000000
1982-01-01	1.1192200000000000000
1983-01-01	0.3525910000000000000
1984-01-01	1.7676400000000000000
1985-01-01	3.3974200000000000000
1986-01-01	0.1586470000000000000
1987-01-01	-0.1149720000000000000
1988-01-01	-0.0056700000000000006
1989-01-01	0.3938370000000000000
1990-01-01	-0.3452650000000000000
1991-01-01	-0.3452650000000000000
1992-01-01	-1.8152000000000000000
1993-01-01	0.2302130000000000000
1994-01-01	0.2148290000000000000
1995-01-01	0.3945670000000000000
1996-01-01	1.9433799999999999000
1997-01-01	0.3809800000000000400
1998-01-01	0.0097000000000000000
1999-01-01	-0.1440320000000000000
2000-01-01	1.1301900000000000000
2001-01-01	-0.0452660000000000000
2002-01-01	1.1235000000000000000
2003-01-01	0.2404670000000000100
2004-01-01	1.2416900000000000000
2005-01-01	-0.5587520000000000000
2006-01-01	0.3939990000000000000
2007-01-01	0.1069500000000000000
2008-01-01	-0.2304890000000000000
2009-01-01	-0.5107350000000000000
2010-01-01	0.2588070000000000000
2011-01-01	0.0375900000000000000
2012-01-01	0.0022260000000000000
2013-01-01	0.6851710000000000000
2014-01-01	0.7770760000000000000
2015-01-01	0.1798040000000000000
2016-01-01	0.7776460000000000000