Year	Percent
1990-01-01	0.8129330000000000
1991-01-01	0.7805900000000000
1992-01-01	1.2884200000000001
1993-01-01	2.7048200000000002
1994-01-01	3.4105900000000000
1995-01-01	2.8056600000000000
1996-01-01	4.0229000000000000
1997-01-01	6.2594400000000010
1998-01-01	7.8375000000000000
1999-01-01	6.4636000000000000
2000-01-01	7.5639800000000000
2001-01-01	7.0410500000000000
2002-01-01	6.1518100000000000
2003-01-01	4.5174600000000000
2004-01-01	3.5096900000000000
2005-01-01	3.7005199999999996
2006-01-01	4.4356599999999995
2007-01-01	6.0520500000000000
2008-01-01	7.9571800000000000
2009-01-01	9.3762700000000000
2010-01-01	11.0482000000000000
2011-01-01	14.7072000000000000
2012-01-01	17.6309000000000000
2013-01-01	16.9803000000000000
2014-01-01	17.8578000000000000
2015-01-01	16.8147000000000000
2016-01-01	16.4505000000000000