Year	Percent
1963-01-01	0.401853000000000000
1964-01-01	1.036320000000000100
1965-01-01	1.641590000000000000
1966-01-01	1.678390000000000000
1967-01-01	1.576490000000000000
1968-01-01	1.915179999999999900
1969-01-01	1.961950000000000000
1970-01-01	0.579406000000000100
1971-01-01	0.280550000000000000
1972-01-01	0.280550000000000000
1973-01-01	0.280550000000000000
1974-01-01	0.100651999999999990
1975-01-01	0.379515000000000000
1976-01-01	0.812064999999999900
1977-01-01	2.431600000000000000
1978-01-01	4.889170000000000000
1979-01-01	4.540390000000000000
1980-01-01	3.098109999999999700
1981-01-01	1.292430000000000000
1982-01-01	0.354201000000000040
1983-01-01	0.220241000000000000
1984-01-01	0.026455000000000003
1985-01-01	0.026455000000000003
1986-01-01	0.830327000000000000
1987-01-01	4.957490000000000000
1988-01-01	6.752150000000000000
1989-01-01	6.792800000000000000
1990-01-01	4.438290000000000000
1991-01-01	2.618750000000000000
1992-01-01	3.176640000000000400
1993-01-01	3.747390000000000000
1994-01-01	3.534240000000000000
1995-01-01	3.773409999999999700
1996-01-01	3.605300000000000000
1997-01-01	3.246750000000000000
1998-01-01	5.389380000000000000
1999-01-01	6.736789999999999000
2000-01-01	4.670380000000001000
2001-01-01	5.553830000000000500
2002-01-01	6.495260000000000000
2003-01-01	5.707580000000000000
2004-01-01	4.782059999999999500
2005-01-01	3.784259999999999700
2006-01-01	2.449880000000000000
2007-01-01	1.692640000000000100
2008-01-01	0.828197000000000000
2009-01-01	0.791029000000000000
2010-01-01	2.361020000000000000
2011-01-01	2.845840000000000000
2012-01-01	2.793140000000000000
2013-01-01	2.846850000000000000
2014-01-01	2.897590000000000000
2015-01-01	4.193150000000000000
2016-01-01	5.490750000000000000