december 1980

december 1980: 210 companies

1 december 1980 9 companies

2 december 1980 6 companies

3 december 1980 7 companies

4 december 1980 8 companies

5 december 1980 11 companies

6 december 1980 8 companies

8 december 1980 4 companies

9 december 1980 8 companies

10 december 1980 4 companies

11 december 1980 3 companies

12 december 1980 6 companies

13 december 1980 5 companies

15 december 1980 10 companies

16 december 1980 8 companies

17 december 1980 5 companies

18 december 1980 7 companies

19 december 1980 2 companies

20 december 1980 7 companies

22 december 1980 4 companies

23 december 1980 8 companies

27 december 1980 11 companies

29 december 1980 7 companies

30 december 1980 8 companies

31 december 1980 54 companies