January 1981

January 1981: 298 companies

January 1, 1981 15 companies

January 3, 1981 2 companies

January 4, 1981 26 companies

January 5, 1981 13 companies

January 6, 1981 10 companies

January 11, 1981 20 companies

January 12, 1981 11 companies

January 13, 1981 31 companies

January 14, 1981 16 companies

January 18, 1981 11 companies

January 19, 1981 10 companies

January 20, 1981 24 companies

January 21, 1981 23 companies

January 22, 1981 14 companies

January 23, 1981 30 companies

January 27, 1981 30 companies

January 29, 1981 12 companies