April 1959

April 1959: 211 companies

2 April 1959 8 companies

3 April 1959 4 companies

5 April 1959 4 companies

6 April 1959 6 companies

7 April 1959 10 companies

8 April 1959 7 companies

9 April 1959 10 companies

12 April 1959 14 companies

13 April 1959 14 companies

14 April 1959 9 companies

15 April 1959 10 companies

16 April 1959 16 companies

17 April 1959 13 companies

19 April 1959 10 companies

20 April 1959 11 companies

21 April 1959 8 companies

22 April 1959 9 companies

26 April 1959 15 companies

27 April 1959 18 companies

28 April 1959 6 companies

30 April 1959 9 companies