Year	Percent
1983-01-01	9.1931200000000000
1984-01-01	6.5400199999999990
1985-01-01	6.8813200000000000
1986-01-01	5.5185900000000006
1987-01-01	3.8750199999999997
1988-01-01	3.8461500000000000
1989-01-01	3.0317400000000000
1990-01-01	2.4677000000000000
1991-01-01	1.7010900000000002
1992-01-01	2.6277800000000000
1993-01-01	2.0330700000000000
1994-01-01	3.1720800000000000
1995-01-01	2.5585200000000000
1996-01-01	2.9073700000000002
1997-01-01	0.8444799999999999
1998-01-01	1.3506300000000000
1999-01-01	1.8833900000000001
2000-01-01	1.9845500000000000
2001-01-01	1.2132100000000001
2002-01-01	3.2898500000000000
2003-01-01	1.6203600000000000
2004-01-01	1.1506399999999999
2005-01-01	0.4376500000000000
2006-01-01	2.4011900000000000
2007-01-01	2.3911900000000000
2008-01-01	1.8605500000000000
2009-01-01	1.2760200000000002
2010-01-01	2.1121700000000000
2011-01-01	1.2868600000000001
2012-01-01	1.4037400000000000
2013-01-01	2.3206000000000000
2014-01-01	0.6665550000000000
2015-01-01	0.5380440000000000
2016-01-01	0.9669469999999999