december 1980

december 1980: 228 companies

1 december 1980 10 companies

2 december 1980 8 companies

3 december 1980 10 companies

4 december 1980 16 companies

5 december 1980 21 companies

7 december 1980 12 companies

8 december 1980 16 companies

9 december 1980 15 companies

10 december 1980 10 companies

11 december 1980 34 companies

12 december 1980 4 companies

14 december 1980 6 companies

15 december 1980 10 companies

16 december 1980 5 companies

17 december 1980 3 companies

18 december 1980 3 companies

19 december 1980 4 companies

25 december 1980 9 companies

29 december 1980 8 companies

30 december 1980 22 companies

31 december 1980 2 companies