Year Percent 2001-01-01 100.00000000000000 2002-01-01 100.00000000000000 2003-01-01 99.82690000000000 2004-01-01 99.94200000000001 2005-01-01 99.94860000000000 2006-01-01 99.91970000000000 2007-01-01 100.00000000000000