Year	Percent
1991-01-01	0.7356420000000000
1992-01-01	0.8017860000000000
1993-01-01	0.9425280000000000
1994-01-01	1.0959200000000000
1995-01-01	1.2661500000000000
1996-01-01	1.3409799999999998
1997-01-01	1.8158800000000000
1998-01-01	2.4282500000000000
1999-01-01	3.1430800000000000
2000-01-01	3.3167000000000000
2001-01-01	3.6895900000000000
2002-01-01	4.2478600000000000
2003-01-01	4.6755900000000010
2004-01-01	4.7002100000000000
2005-01-01	5.1124300000000010
2006-01-01	4.6413199999999994
2007-01-01	3.9537699999999996
2008-01-01	3.4649300000000003
2009-01-01	5.3408900000000000
2010-01-01	5.8117100000000000
2011-01-01	4.6741800000000010
2012-01-01	4.4491700000000000
2013-01-01	5.4544300000000000
2014-01-01	6.8356699999999995
2015-01-01	6.9901200000000000
2016-01-01	6.1111100000000000