Year	Percent
1972-01-01	0.0100450000000000000
1973-01-01	0.0246930000000000000
1974-01-01	0.0074390000000000000
1975-01-01	0.0059330000000000000
1976-01-01	0.0191199999999999980
1977-01-01	0.0018390000000000001
1978-01-01	0.0093540000000000010
1979-01-01	-0.0028469999999999997
1980-01-01	0.0068660000000000000
1981-01-01	0.0017560000000000000
1982-01-01	0.0511870000000000000
1983-01-01	0.1022440000000000000
1984-01-01	0.0765540000000000000
1985-01-01	0.1189430000000000100
1986-01-01	0.1986950000000000000
1987-01-01	0.0641010000000000000
1988-01-01	0.1697789999999999900
1989-01-01	0.0883280000000000000
1990-01-01	0.0145610000000000010
1991-01-01	0.2283720000000000000
1992-01-01	0.1725280000000000000
1993-01-01	0.4283180000000000300
1994-01-01	0.5158739999999999000
1995-01-01	0.6126670000000000000
1996-01-01	0.8962060000000000000
1997-01-01	0.3876159999999999600
1998-01-01	0.0700780000000000000
1999-01-01	1.2247100000000000000
2000-01-01	2.1520500000000000000
2001-01-01	1.2309200000000000000
2002-01-01	0.8577120000000000000
2003-01-01	1.7884200000000001000
2004-01-01	1.2160300000000000000
2005-01-01	1.6068300000000000000
2006-01-01	1.5691899999999999000
2007-01-01	0.6298630000000001000
2008-01-01	0.0611350000000000000
2009-01-01	-0.8538899999999999000
2010-01-01	-1.1468800000000000000
2011-01-01	0.5133200000000000000
2012-01-01	0.4668190000000000000
2013-01-01	-0.5159739999999999000
2014-01-01	0.3014949999999999600
2015-01-01	-1.4869600000000000000
2016-01-01	-0.3119220000000000000