Year	Percent
1982-01-01	0.8142689999999999
1983-01-01	0.7796720000000000
1984-01-01	0.6900800000000000
1985-01-01	0.8085140000000001
1986-01-01	0.8068960000000001
1987-01-01	1.3856200000000000
1988-01-01	1.0492500000000000
1989-01-01	1.0492500000000000
1990-01-01	1.0492500000000000
1991-01-01	1.0492500000000000
1992-01-01	1.0492500000000000
1993-01-01	1.0492500000000000
1994-01-01	1.0492500000000000
1995-01-01	1.0492500000000000
1996-01-01	1.0492500000000000
1997-01-01	1.0492500000000000
1998-01-01	1.0492500000000000
1999-01-01	1.0492500000000000
2000-01-01	1.0492500000000000
2001-01-01	1.0492500000000000
2002-01-01	1.0492500000000000
2003-01-01	1.0492500000000000
2004-01-01	1.0492500000000000
2005-01-01	1.0492500000000000
2006-01-01	1.0492500000000000
2007-01-01	7.8886699999999990
2008-01-01	6.3109000000000000
2009-01-01	8.1353500000000000
2010-01-01	6.9375399999999990
2011-01-01	5.4221900000000005
2012-01-01	5.7714099999999995
2013-01-01	17.0410000000000000
2014-01-01	16.9679000000000000
2015-01-01	25.1138000000000000
2016-01-01	25.2854000000000000