Year	Percent
1982-01-01	0.27260700000000004
1983-01-01	0.25155200000000000
1984-01-01	0.19856100000000000
1985-01-01	0.25090100000000004
1986-01-01	0.29663300000000000
1987-01-01	0.37413000000000000
1988-01-01	0.34392000000000000
1989-01-01	0.30054699999999995
1990-01-01	0.27388600000000000
1991-01-01	0.26665600000000000
1992-01-01	0.26665600000000000
1993-01-01	0.26665600000000000
1994-01-01	0.26665600000000000
1995-01-01	6.60031000000000000
1996-01-01	6.06574000000000000
1997-01-01	0.33130300000000000
1998-01-01	0.72808000000000010
1999-01-01	0.73452700000000000
2000-01-01	0.39802100000000000
2001-01-01	0.41279700000000000
2002-01-01	2.50959000000000000
2003-01-01	2.19789000000000000
2004-01-01	2.49243000000000000
2005-01-01	2.11012000000000000
2006-01-01	1.82109000000000000
2007-01-01	3.13753000000000000
2008-01-01	2.33336000000000000
2009-01-01	3.20923000000000000
2010-01-01	4.14274000000000000
2011-01-01	5.13074000000000000
2012-01-01	6.35645000000000000
2013-01-01	7.66976000000000100
2014-01-01	9.60854000000000000
2015-01-01	11.50570000000000000
2016-01-01	13.24980000000000000