april 1990

april 1990: 544 companies

1. april 1990 30 companies

2. april 1990 22 companies

3. april 1990 33 companies

4. april 1990 31 companies

5. april 1990 38 companies

6. april 1990 16 companies

8. april 1990 47 companies

17. april 1990 22 companies

18. april 1990 34 companies

19. april 1990 35 companies

20. april 1990 7 companies

22. april 1990 37 companies

23. april 1990 33 companies

24. april 1990 38 companies

25. april 1990 52 companies

26. april 1990 38 companies

27. april 1990 7 companies

29. april 1990 24 companies