Year	Percent
1996-01-01	1.5313900000000000
1997-01-01	2.5568800000000000
1998-01-01	2.8937300000000000
1999-01-01	4.8283700000000000
2000-01-01	4.5020000000000000
2001-01-01	4.3428900000000010
2002-01-01	3.8260400000000003
2003-01-01	3.6116900000000003
2004-01-01	3.7308700000000000
2005-01-01	4.1743500000000000
2006-01-01	5.5127000000000000
2007-01-01	5.2771500000000000
2008-01-01	4.7994400000000000
2009-01-01	4.9660300000000000
2010-01-01	5.2497500000000000
2011-01-01	6.4613500000000000
2012-01-01	7.1495300000000000
2013-01-01	5.6100900000000005
2014-01-01	4.7523100000000000
2015-01-01	5.3128699999999990
2016-01-01	2.1216700000000000