Year	Percent
1991-01-01	1.7561200000000001
1992-01-01	2.7396400000000000
1993-01-01	5.5510300000000000
1994-01-01	8.3272700000000000
1995-01-01	3.9338800000000003
1996-01-01	7.1092500000000000
1997-01-01	8.6752899999999990
1998-01-01	6.1868099999999995
1999-01-01	4.4759800000000000
2000-01-01	4.8452699999999990
2001-01-01	10.0133000000000000
2002-01-01	5.1020000000000000
2003-01-01	6.4797300000000000
2004-01-01	5.6423700000000000
2005-01-01	6.4876300000000000
2006-01-01	4.4375400000000000
2007-01-01	6.4169700000000000
2008-01-01	5.0621700000000000
2009-01-01	6.3264600000000000
2010-01-01	5.0336800000000000
2011-01-01	6.2719200000000000
2012-01-01	4.0145300000000010
2013-01-01	4.0199099999999990
2014-01-01	5.1581900000000000
2015-01-01	6.0737700000000000
2016-01-01	4.3003200000000000
2017-01-01	5.0615100000000000