April 1990

April 1990: 537 companies

1 April 1990 232 companies

2 April 1990 22 companies

3 April 1990 22 companies

4 April 1990 12 companies

5 April 1990 22 companies

6 April 1990 14 companies

9 April 1990 24 companies

10 April 1990 25 companies

11 April 1990 8 companies

12 April 1990 2 companies

14 April 1990 1 companies

15 April 1990 4 companies

17 April 1990 17 companies

18 April 1990 19 companies

19 April 1990 17 companies

20 April 1990 24 companies

21 April 1990 1 companies

23 April 1990 6 companies

24 April 1990 7 companies

25 April 1990 19 companies

26 April 1990 9 companies

27 April 1990 15 companies

28 April 1990 1 companies

30 April 1990 14 companies