1952

1952: 474 companies

Ιανουάριος 94 companies

Φεβρουάριος 39 companies

Μάρτιος 30 companies

Απρίλιος 25 companies

Μάιος 41 companies

Ιούνιος 43 companies

Ιούλιος 41 companies

Αύγουστος 36 companies

Σεπτέμβριος 29 companies

Οκτώβριος 44 companies

Νοέμβριος 28 companies

Δεκέμβριος 24 companies