Year	Percent
1985-01-01	30.016000000000000
1986-01-01	30.736000000000000
1987-01-01	27.081300000000000
1988-01-01	19.292800000000000
1989-01-01	20.586300000000000
1990-01-01	16.785700000000000
1991-01-01	9.221980000000000
1992-01-01	8.230450000000000
1993-01-01	7.930090000000000
1994-01-01	8.325110000000000
1995-01-01	11.503900000000000
1996-01-01	9.935120000000000
1997-01-01	5.694070000000000
1998-01-01	7.759170000000000
1999-01-01	6.180490000000000
2000-01-01	5.093990000000000
2001-01-01	4.600010000000000
2002-01-01	5.632880000000000
2003-01-01	5.813320000000000
2004-01-01	5.715840000000000
2005-01-01	5.673330000000000
2006-01-01	5.763900000000000
2007-01-01	6.169810000000000
2008-01-01	5.965650000000000
2009-01-01	8.997689999999999
2010-01-01	10.808700000000000
2011-01-01	10.719700000000000
2012-01-01	12.291500000000000
2013-01-01	16.195700000000000
2014-01-01	16.045300000000000
2015-01-01	20.584200000000000
2016-01-01	21.147500000000000