Year	Percent
1963-01-01	1.054997000000000000000
1964-01-01	0.000037900000000000000
1965-01-01	1.358371000000000000000
1966-01-01	0.000037300000000000000
1967-01-01	1.243562000000000000000
1968-01-01	0.000033799999999999995
1969-01-01	0.000027100000000000000
1970-01-01	0.000036300000000000000
1971-01-01	0.000043900000000000000
1972-01-01	0.000059100000000000000
1973-01-01	0.000069900000000000000
1974-01-01	0.000094100000000000000
1975-01-01	0.000125800000000000000
1976-01-01	0.000121799999999999990
1977-01-01	0.000112200000000000020
1978-01-01	0.000095800000000000000
1979-01-01	0.000067900000000000010
1980-01-01	0.000025300000000000002
1981-01-01	0.000022300000000000000
1982-01-01	0.000022300000000000000
1983-01-01	0.000022300000000000000
1984-01-01	0.000022300000000000000
1985-01-01	0.000022300000000000000
1986-01-01	0.000022300000000000000
1987-01-01	0.000022300000000000000
1988-01-01	0.923328800000000100000
1989-01-01	1.810870000000000000000
1990-01-01	1.266728000000000000000
1991-01-01	0.479001599999999970000
1992-01-01	0.219610700000000000000
1993-01-01	0.246094200000000000000
1994-01-01	0.239957500000000000000
1995-01-01	0.412778400000000050000
1996-01-01	0.412778400000000050000
1997-01-01	0.412778400000000050000
1998-01-01	0.412778400000000050000
1999-01-01	0.412778400000000050000
2000-01-01	1.452372000000000000000
2001-01-01	0.982396400000000000000
2002-01-01	0.551347000000000000000
2003-01-01	0.653534900000000000000
2004-01-01	1.065086000000000000000
2005-01-01	0.925162900000000100000
2006-01-01	1.210356000000000000000
2007-01-01	1.812091000000000000000
2008-01-01	2.705072000000000000000
2009-01-01	3.071259999999999700000
2010-01-01	2.785866999999999600000
2011-01-01	3.058147000000000000000
2012-01-01	3.110693000000000000000
2013-01-01	3.656640000000000300000
2014-01-01	6.193645000000000000000