1952

1952: 324 companies

Ιανουάριος 25 companies

Φεβρουάριος 26 companies

Μάρτιος 29 companies

Απρίλιος 22 companies

Μάιος 34 companies

Ιούνιος 29 companies

Ιούλιος 27 companies

Αύγουστος 21 companies

Σεπτέμβριος 30 companies

Οκτώβριος 18 companies

Νοέμβριος 34 companies

Δεκέμβριος 29 companies