May 1961

May 1961: 76 companies

1 may 1961 2 companies

2 may 1961 4 companies

3 may 1961 2 companies

4 may 1961 3 companies

5 may 1961 3 companies

8 may 1961 2 companies

9 may 1961 2 companies

10 may 1961 5 companies

11 may 1961 4 companies

12 may 1961 2 companies

15 may 1961 3 companies

16 may 1961 2 companies

17 may 1961 3 companies

18 may 1961 2 companies

19 may 1961 7 companies

22 may 1961 3 companies

23 may 1961 1 companies

24 may 1961 3 companies

25 may 1961 8 companies

26 may 1961 6 companies

29 may 1961 2 companies

30 may 1961 1 companies

31 may 1961 6 companies