Year	Percent
1971-01-01	0.001201000000000000
1972-01-01	0.022028000000000000
1973-01-01	0.004899000000000001
1974-01-01	0.057237000000000000
1975-01-01	0.145304000000000000
1976-01-01	0.175142000000000020
1977-01-01	0.193455000000000000
1978-01-01	0.013381000000000000
1979-01-01	0.079404999999999990
1980-01-01	0.136171000000000010
1981-01-01	0.089542000000000000
1982-01-01	0.265150000000000000
1983-01-01	0.278186999999999960
1984-01-01	0.264527000000000000
1985-01-01	-0.080692000000000000
1986-01-01	0.180232000000000000
1987-01-01	-0.009058000000000000
1988-01-01	0.223838999999999980
1989-01-01	0.100375999999999990
1990-01-01	0.143809000000000000
1991-01-01	0.354902000000000000
1992-01-01	0.450122999999999940
1993-01-01	0.280882000000000000
1994-01-01	0.186639000000000000
1995-01-01	0.183118000000000000
1996-01-01	0.028806000000000002
1997-01-01	0.083453000000000000
1998-01-01	0.351942000000000030
1999-01-01	0.905567000000000000
2000-01-01	1.101550000000000000
2001-01-01	1.771930000000000000
2002-01-01	1.384490000000000000
2003-01-01	1.657360000000000000
2004-01-01	2.038220000000000000
2005-01-01	1.879859999999999900
2006-01-01	3.546390000000000000
2007-01-01	1.630200000000000000
2008-01-01	-0.244402000000000000
2009-01-01	1.181630000000000000
2010-01-01	0.675221000000000000
2011-01-01	0.262970000000000000
2012-01-01	-0.247071000000000000
2013-01-01	-0.561151000000000100
2014-01-01	-0.918469000000000100
2015-01-01	-0.327092999999999970
2016-01-01	0.745298999999999900