Year	Percent
1971-01-01	0.055330000000000000
1972-01-01	0.078841000000000000
1973-01-01	0.078841000000000000
1974-01-01	0.028118999999999998
1975-01-01	0.090510000000000010
1976-01-01	0.266732000000000000
1977-01-01	0.322855000000000000
1978-01-01	0.220438000000000020
1979-01-01	0.114249000000000000
1980-01-01	0.020015000000000000
1981-01-01	0.184950000000000000
1982-01-01	0.155191000000000000
1983-01-01	0.390571000000000000
1984-01-01	0.402059000000000000
1985-01-01	0.738622999999999900
1986-01-01	1.430200000000000000
1987-01-01	0.138349000000000000
1988-01-01	0.875344000000000000
1989-01-01	-0.149696000000000000
1990-01-01	-0.216103000000000020
1991-01-01	-0.199345000000000000
1992-01-01	-0.253613000000000030
1993-01-01	0.032652999999999995
1994-01-01	0.796369000000000000
1995-01-01	0.502726000000000000
1996-01-01	0.963368000000000000
1997-01-01	-0.927773000000000000
1998-01-01	-0.241133000000000000
1999-01-01	0.363359000000000000
2000-01-01	0.391627000000000000
2001-01-01	-0.672473000000000000
2002-01-01	1.404080000000000000
2003-01-01	2.393690000000000300
2004-01-01	1.604520000000000200
2005-01-01	2.450400000000000000
2006-01-01	3.484750000000000000
2007-01-01	-0.317535000000000000
2008-01-01	-1.456130000000000000
2009-01-01	3.861220000000000000
2010-01-01	1.113420000000000000
2011-01-01	-0.437810000000000030
2012-01-01	-0.157132000000000000
2013-01-01	1.357980000000000000
2014-01-01	0.221568000000000000
2015-01-01	1.062520000000000100
2016-01-01	-0.780165000000000000