Year	Percent
1963-01-01	3.497601999999999700000
1964-01-01	0.000120400000000000000
1965-01-01	4.283042000000000000000
1966-01-01	0.000120599999999999990
1967-01-01	4.197620000000000000000
1968-01-01	0.000126700000000000020
1969-01-01	0.000096900000000000010
1970-01-01	0.000108500000000000000
1971-01-01	0.000106099999999999990
1972-01-01	0.000112300000000000000
1973-01-01	0.000112000000000000010
1974-01-01	0.000126499999999999980
1975-01-01	0.000147500000000000000
1976-01-01	0.000143600000000000000
1977-01-01	0.000152400000000000000
1978-01-01	0.000143600000000000000
1979-01-01	0.000112400000000000010
1980-01-01	0.000041400000000000000
1981-01-01	0.000038799999999999994
1982-01-01	0.000038799999999999994
1983-01-01	0.000038799999999999994
1984-01-01	0.000038799999999999994
1985-01-01	0.000038799999999999994
1986-01-01	0.000038799999999999994
1987-01-01	0.000038799999999999994
1988-01-01	1.718235000000000000000
1989-01-01	3.693957000000000000000
1990-01-01	2.841927000000000000000
1991-01-01	1.753178000000000000000
1992-01-01	2.162709999999999700000
1993-01-01	2.706039000000000000000
1994-01-01	1.268981000000000000000
1995-01-01	1.159354000000000000000
1996-01-01	1.159354000000000000000
1997-01-01	1.159354000000000000000
1998-01-01	1.159354000000000000000
1999-01-01	1.159354000000000000000
2000-01-01	4.126728000000000000000
2001-01-01	2.791353000000000000000
2002-01-01	1.690645000000000200000
2003-01-01	2.120533000000000000000
2004-01-01	3.031320000000000000000
2005-01-01	2.223604000000000000000
2006-01-01	2.475031000000000000000
2007-01-01	3.704875000000000000000
2008-01-01	4.550135000000000000000
2009-01-01	4.823536000000000000000
2010-01-01	4.962758999999999000000
2011-01-01	5.663766000000001000000
2012-01-01	5.859610000000000000000
2013-01-01	6.652180000000000000000
2014-01-01	10.499600000000000000000