Year	Percent
1998-01-01	1.6920400000000002
1999-01-01	2.4503200000000000
2000-01-01	3.0526500000000000
2001-01-01	9.3483300000000000
2002-01-01	3.9678600000000000
2003-01-01	6.1792099999999990
2004-01-01	3.7824199999999997
2005-01-01	4.7333000000000000
2006-01-01	4.2453600000000000
2007-01-01	4.1265800000000010
2008-01-01	1.7958200000000000
2009-01-01	1.7958200000000000
2010-01-01	1.7958200000000000
2011-01-01	0.6594610000000000
2012-01-01	0.7188650000000000
2013-01-01	1.2733900000000000
2014-01-01	1.3905700000000000