January 1981

January 1981: 591 companies

January 1, 1981 42 companies

January 2, 1981 47 companies

January 5, 1981 14 companies

January 6, 1981 7 companies

January 7, 1981 14 companies

January 8, 1981 16 companies

January 9, 1981 258 companies

January 10, 1981 7 companies

January 11, 1981 2 companies

January 12, 1981 17 companies

January 13, 1981 10 companies

January 14, 1981 12 companies

January 15, 1981 20 companies

January 16, 1981 12 companies

January 18, 1981 1 companies

January 19, 1981 14 companies

January 20, 1981 7 companies

January 21, 1981 6 companies

January 22, 1981 5 companies

January 23, 1981 17 companies

January 24, 1981 1 companies

January 25, 1981 1 companies

January 26, 1981 14 companies

January 27, 1981 6 companies

January 28, 1981 9 companies

January 29, 1981 18 companies

January 30, 1981 10 companies

January 31, 1981 4 companies