Year	Percent
1999-01-01	0.00040599999999999995
2000-01-01	0.02346900000000000000
2001-01-01	0.05594400000000001000
2002-01-01	0.12049900000000000000
2003-01-01	0.15981700000000001000
2004-01-01	0.13781500000000002000
2005-01-01	0.10715300000000000000
2006-01-01	0.08685200000000000000
2007-01-01	0.08685200000000000000
2008-01-01	0.08685200000000000000
2009-01-01	0.13647800000000000000
2010-01-01	0.12487100000000001000
2011-01-01	0.08640300000000000000
2012-01-01	0.08035100000000000000