Year	Percent
1974-01-01	0.166682000000000000
1975-01-01	0.189865000000000000
1976-01-01	0.219133000000000000
1977-01-01	0.197497000000000000
1978-01-01	0.850579999999999900
1979-01-01	0.883957000000000000
1980-01-01	0.215644999999999980
1981-01-01	0.270575000000000000
1982-01-01	0.320829000000000000
1983-01-01	0.321319000000000000
1984-01-01	0.279465000000000000
1985-01-01	0.352648000000000000
1986-01-01	0.692319999999999900
1987-01-01	0.549172999999999900
1988-01-01	0.199847000000000000
1989-01-01	0.183728000000000000
1990-01-01	0.200370000000000000
1991-01-01	0.229819000000000000
1992-01-01	0.229406000000000000
1993-01-01	0.194237000000000000
1994-01-01	0.504811000000000000
1995-01-01	0.608047999999999900
1996-01-01	0.299651000000000000
1997-01-01	0.149449000000000000
1998-01-01	0.126489000000000020
1999-01-01	0.124910000000000000
2000-01-01	0.133460000000000000
2001-01-01	0.117710000000000000
2002-01-01	0.273604000000000000
2003-01-01	0.488008000000000000
2004-01-01	0.568260000000000000
2005-01-01	0.542638000000000100
2006-01-01	0.408936000000000000
2007-01-01	0.202992000000000000
2008-01-01	0.060547000000000004
2009-01-01	0.035862000000000000
2010-01-01	0.051998000000000000
2011-01-01	1.075650000000000000
2012-01-01	1.122850000000000000
2013-01-01	0.176001000000000000
2014-01-01	0.103948000000000000
2015-01-01	0.045675000000000000
2016-01-01	1.032850000000000000