Year	Percent
1982-01-01	0.301000000000000000
1983-01-01	0.234951000000000020
1984-01-01	0.155032000000000000
1985-01-01	0.087564000000000000
1986-01-01	0.148053000000000000
1987-01-01	0.083539000000000000
1988-01-01	0.104478000000000000
1989-01-01	0.054305999999999990
1990-01-01	0.054298000000000000
1991-01-01	0.101682000000000010
1992-01-01	0.145083000000000000
1993-01-01	0.141969000000000000
1994-01-01	0.151863000000000000
1995-01-01	0.047648000000000000
1996-01-01	0.193575000000000000
1997-01-01	0.477222999999999950
1998-01-01	0.033429000000000000
1999-01-01	0.048445999999999996
2000-01-01	0.062582000000000000
2001-01-01	0.090265000000000000
2002-01-01	0.160013000000000020
2003-01-01	0.278586000000000000
2004-01-01	0.339644000000000000
2005-01-01	0.145980000000000000
2006-01-01	0.156951000000000000
2007-01-01	0.192364000000000000
2008-01-01	0.198698000000000000
2009-01-01	0.180226000000000000
2010-01-01	0.223519000000000000
2011-01-01	0.218795000000000000
2012-01-01	0.199352000000000000
2013-01-01	0.185174000000000000
2014-01-01	0.285341000000000000
2015-01-01	0.401687000000000000
2016-01-01	0.314767000000000000
2017-01-01	0.234244000000000000