april 1960

april 1960: 233 companies

1. april 1960 12 companies

3. april 1960 9 companies

4. april 1960 14 companies

5. april 1960 13 companies

6. april 1960 3 companies

7. april 1960 12 companies

8. april 1960 19 companies

10. april 1960 10 companies

13. april 1960 14 companies

14. april 1960 11 companies

15. april 1960 5 companies

17. april 1960 2 companies

19. april 1960 17 companies

20. april 1960 7 companies

21. april 1960 5 companies

22. april 1960 11 companies

24. april 1960 11 companies

25. april 1960 8 companies

26. april 1960 13 companies

27. april 1960 20 companies

28. april 1960 10 companies

29. april 1960 7 companies