Year	Percent
1963-01-01	3.014278000000000000000
1964-01-01	0.000096400000000000010
1965-01-01	3.190766999999999700000
1966-01-01	0.000083200000000000000
1967-01-01	2.409894000000000000000
1968-01-01	0.000060899999999999996
1969-01-01	0.000047799999999999996
1970-01-01	0.000056100000000000010
1971-01-01	0.000064800000000000000
1972-01-01	0.000081800000000000000
1973-01-01	0.000088599999999999990
1974-01-01	0.000116300000000000010
1975-01-01	0.000158400000000000000
1976-01-01	0.000159900000000000000
1977-01-01	0.000146099999999999970
1978-01-01	0.000118600000000000000
1979-01-01	0.000081300000000000000
1980-01-01	0.000029299999999999997
1981-01-01	0.000025800000000000000
1982-01-01	0.000025800000000000000
1983-01-01	0.000025800000000000000
1984-01-01	0.000025800000000000000
1985-01-01	0.000025800000000000000
1986-01-01	0.000025800000000000000
1987-01-01	0.000025800000000000000
1988-01-01	1.020020000000000100000
1989-01-01	1.988144000000000000000
1990-01-01	1.405295999999999900000
1991-01-01	0.541227000000000000000
1992-01-01	0.232519000000000000000
1993-01-01	0.259297700000000000000
1994-01-01	0.312725500000000000000
1995-01-01	0.500866500000000000000
1996-01-01	0.500866500000000000000
1997-01-01	0.500866500000000000000
1998-01-01	0.500866500000000000000
1999-01-01	0.500866500000000000000
2000-01-01	1.700631000000000200000
2001-01-01	1.150321000000000000000
2002-01-01	0.631080900000000100000
2003-01-01	1.003242000000000000000
2004-01-01	1.674916000000000000000
2005-01-01	1.246813000000000000000
2006-01-01	1.481912999999999800000
2007-01-01	2.119280000000000000000
2008-01-01	2.977984000000000000000
2009-01-01	3.336672000000000000000
2010-01-01	3.056091000000000000000
2011-01-01	3.338491000000000300000
2012-01-01	3.499746000000000000000
2013-01-01	4.231345000000000000000
2014-01-01	7.155349000000000000000