[["", "( a )", "( b )", "( c )", "( d )"], ["period", "total number of shares purchased ( 1 ) ( 2 )", "average price paid per share", "total number of shares purchased as part of publicly announced plans or programs ( 1 )", "maximum number of shares that may yet be purchased under the plans or programs"], ["10/01/04 2013 10/31/04", "6015", "$ 40.51", "n/a", "n/a"], ["11/01/04 2013 11/30/04", "5145", "$ 38.94", "n/a", "n/a"], ["12/01/04 2013 12/31/04", "34526", "$ 37