Year	Percent
1999-01-01	0.1851780000000000
2000-01-01	0.1787830000000000
2001-01-01	0.1387860000000000
2002-01-01	0.2549160000000000
2003-01-01	0.2167340000000000
2004-01-01	0.5160620000000000
2005-01-01	3.0488700000000000
2006-01-01	6.7879300000000000
2007-01-01	9.8911699999999990
2008-01-01	6.0102199999999995
2009-01-01	11.7299000000000000
2010-01-01	16.1284000000000000
2011-01-01	12.5746000000000000
2012-01-01	14.8730000000000000
2013-01-01	15.7054000000000000
2014-01-01	16.0223000000000000
2015-01-01	6.7528700000000000
2016-01-01	7.0001600000000000