Year	Percent
1988-01-01	4.0508500000000000
1989-01-01	0.4315170000000000
1990-01-01	11.4751000000000000
1991-01-01	3.5989199999999997
1992-01-01	5.2014700000000000
1993-01-01	4.9204900000000000
1994-01-01	2.4752900000000000
1995-01-01	2.4752900000000000
1996-01-01	1.0468200000000000
1997-01-01	1.9668599999999998
1998-01-01	1.4063600000000000
1999-01-01	1.3784500000000000
2000-01-01	1.5011700000000001
2001-01-01	0.7434830000000000
2002-01-01	0.7434830000000000
2003-01-01	0.7434830000000000
2004-01-01	0.7434830000000000
2005-01-01	0.7434830000000000
2006-01-01	0.7434830000000000
2007-01-01	0.7434830000000000
2008-01-01	0.7434830000000000
2009-01-01	1.7237900000000002
2010-01-01	3.0125800000000000
2011-01-01	2.4832200000000000
2012-01-01	2.2067099999999997
2013-01-01	2.3971100000000000
2014-01-01	2.7590400000000000
2015-01-01	2.9089500000000000
2016-01-01	2.6868500000000000