Year	Percent
1983-01-01	4.32303000000000000
1984-01-01	2.28303000000000000
1985-01-01	1.37627000000000000
1986-01-01	0.70471100000000000
1987-01-01	0.70786900000000000
1988-01-01	0.71170000000000000
1989-01-01	0.73864800000000000
1990-01-01	0.79037100000000000
1991-01-01	0.73629200000000010
1992-01-01	0.56169300000000000
1993-01-01	0.40331800000000000
1994-01-01	0.61075500000000000
1995-01-01	0.59294300000000000
1996-01-01	0.60121300000000000
1997-01-01	0.48248000000000000
1998-01-01	0.45362299999999994
1999-01-01	0.37282900000000000
2000-01-01	0.35186999999999996
2001-01-01	0.20951100000000000
2002-01-01	0.22431700000000002
2003-01-01	0.19125100000000000
2004-01-01	0.23638900000000000
2005-01-01	0.19402800000000000
2006-01-01	0.17775500000000000
2007-01-01	0.42465400000000000
2008-01-01	0.27581999999999995
2009-01-01	0.19232900000000000
2010-01-01	0.12206300000000000
2011-01-01	0.10804500000000000
2012-01-01	0.10905200000000000
2013-01-01	0.10029700000000000
2014-01-01	0.09385200000000000
2015-01-01	0.09094000000000000
2016-01-01	0.09059700000000000
2017-01-01	0.08738100000000000