Year	Percent
1973-01-01	0.182928000000000000
1974-01-01	0.239532000000000020
1975-01-01	0.649338000000000000
1976-01-01	1.493450000000000000
1977-01-01	1.836240000000000000
1978-01-01	1.698020000000000000
1979-01-01	1.317089999999999900
1980-01-01	1.034060000000000000
1981-01-01	0.918118000000000000
1982-01-01	0.970578000000000000
1983-01-01	1.064870000000000000
1984-01-01	1.073470000000000100
1985-01-01	1.093020000000000000
1986-01-01	1.717770000000000000
1987-01-01	0.935871999999999900
1988-01-01	0.935871999999999900
1989-01-01	0.004649000000000000
1990-01-01	0.104600000000000000
1991-01-01	0.099512000000000000
1992-01-01	0.110877000000000000
1993-01-01	0.108324000000000000
1994-01-01	0.108324000000000000
1995-01-01	0.108324000000000000
1996-01-01	0.108324000000000000
1997-01-01	0.108324000000000000
1998-01-01	0.108324000000000000
1999-01-01	0.108324000000000000
2000-01-01	0.108324000000000000
2001-01-01	0.003822000000000000
2002-01-01	0.011281999999999999
2003-01-01	0.015000000000000000
2004-01-01	0.013170000000000000
2005-01-01	0.192743000000000000
2006-01-01	0.083852000000000000
2007-01-01	0.038905000000000000
2008-01-01	2.326530000000000000
2009-01-01	8.650180000000000000
2010-01-01	9.996670000000000000
2011-01-01	7.943650000000000000
2012-01-01	6.858689999999999000
2013-01-01	5.087680000000001000
2014-01-01	3.631740000000000000
2015-01-01	3.977470000000000000
2016-01-01	4.059730000000000000