Year	Percent
1985-01-01	27.8587000000000000000
1986-01-01	23.0800000000000000000
1987-01-01	16.5283000000000000000
1988-01-01	15.0279999999999990000
1989-01-01	15.5040000000000010000
1990-01-01	10.4803000000000000000
1991-01-01	15.9987000000000000000
1992-01-01	20.3625000000000000000
1993-01-01	22.9665000000000000000
1994-01-01	23.6970000000000000000
1995-01-01	21.2387000000000000000
1996-01-01	12.3012000000000000000
1997-01-01	5.4791300000000005000
1998-01-01	5.9891800000000000000
1999-01-01	3.8557000000000000000
2000-01-01	2.1785400000000004000
2001-01-01	0.7719030000000000000
2002-01-01	0.2227770000000000000
2003-01-01	0.0911840000000000000
2004-01-01	0.0355269999999999960
2005-01-01	0.0124580000000000000
2006-01-01	0.0026270000000000000
2007-01-01	0.0026270000000000000
2008-01-01	0.0025329999999999997
2009-01-01	0.0077890000000000000
2010-01-01	0.0098580000000000000
2011-01-01	0.0110580000000000000
2012-01-01	0.0143400000000000000
2013-01-01	0.0204800000000000000
2014-01-01	1.7598700000000000000
2015-01-01	6.2268300000000005000
2016-01-01	9.4593200000000000000