december 1980

december 1980: 1 132 companies

1. december 1980 53 companies

2. december 1980 73 companies

3. december 1980 45 companies

4. december 1980 42 companies

5. december 1980 50 companies

6. december 1980 36 companies

8. december 1980 39 companies

9. december 1980 43 companies

10. december 1980 53 companies

11. december 1980 46 companies

12. december 1980 45 companies

13. december 1980 23 companies

15. december 1980 50 companies

16. december 1980 73 companies

17. december 1980 50 companies

18. december 1980 54 companies

19. december 1980 32 companies

20. december 1980 41 companies

22. december 1980 44 companies

24. december 1980 22 companies

26. december 1980 74 companies

27. december 1980 35 companies

29. december 1980 44 companies

30. december 1980 24 companies

31. december 1980 41 companies