Year	Percent
1991-01-01	1.6855200000000001
1992-01-01	7.9577600000000000
1993-01-01	13.9702000000000000
1994-01-01	6.8510600000000000
1995-01-01	5.5220300000000000
1996-01-01	6.2435400000000000
1997-01-01	5.8200699999999990
1998-01-01	9.7604800000000010
1999-01-01	12.9620000000000000
2000-01-01	10.9027000000000000
2001-01-01	9.5237800000000000
2002-01-01	8.9726900000000000
2003-01-01	7.9762800000000000
2004-01-01	7.6289500000000000
2005-01-01	7.1715500000000000
2006-01-01	5.8245200000000000
2007-01-01	4.5951900000000006
2008-01-01	3.8111000000000000
2009-01-01	3.6944199999999996
2010-01-01	3.1578300000000000
2011-01-01	2.7638400000000000
2012-01-01	2.4618900000000004
2013-01-01	2.0795900000000000
2014-01-01	1.8710000000000000
2015-01-01	1.7413500000000000
2016-01-01	6.4406000000000000