1956

1956: 428 companies

Ιανουάριος 29 companies

Φεβρουάριος 36 companies

Μάρτιος 36 companies

Απρίλιος 35 companies

Μάιος 34 companies

Ιούνιος 51 companies

Ιούλιος 43 companies

Αύγουστος 30 companies

Σεπτέμβριος 25 companies

Οκτώβριος 43 companies

Νοέμβριος 31 companies

Δεκέμβριος 35 companies