Year	Percent
1973-01-01	5.1756199999999990
1974-01-01	1.5189100000000000
1975-01-01	1.1923500000000000
1976-01-01	0.9764790000000001
1977-01-01	0.9120190000000000
1978-01-01	0.9123080000000000
1979-01-01	0.9123080000000000
1980-01-01	0.9123080000000000
1981-01-01	0.9123080000000000
1982-01-01	0.9123080000000000
1983-01-01	0.9123080000000000
1984-01-01	0.9123080000000000
1985-01-01	0.9123080000000000
1986-01-01	0.9123080000000000
1987-01-01	1.2802200000000001
1988-01-01	2.2298500000000000
1989-01-01	1.6645000000000000
1990-01-01	1.6645000000000000
1991-01-01	1.1903200000000000
1992-01-01	1.0520200000000002
1993-01-01	1.3127200000000000
1994-01-01	1.8113099999999998
1995-01-01	1.7750299999999999
1996-01-01	1.6363700000000000
1997-01-01	2.2857200000000000
1998-01-01	2.1014700000000000
1999-01-01	2.3679000000000000
2000-01-01	1.8146900000000001
2001-01-01	1.1566900000000000
2002-01-01	17.1873000000000000
2003-01-01	15.3232000000000000
2004-01-01	1.0095500000000000
2005-01-01	0.8043260000000000
2006-01-01	3.2244300000000000
2007-01-01	2.8869900000000000
2008-01-01	1.9949000000000000
2009-01-01	1.9942799999999998
2010-01-01	2.1912800000000000
2011-01-01	1.8546500000000000
2012-01-01	1.6912300000000000
2013-01-01	2.6869000000000000
2014-01-01	2.8395300000000000
2015-01-01	6.7147100000000000
2016-01-01	18.6716000000000000