1931

1931: 137 companies

janvāris 18 companies

februāris 9 companies

marts 9 companies

aprīlis 24 companies

maijs 9 companies

jūnijs 7 companies

jūlijs 15 companies

augusts 7 companies

septembris 5 companies

oktobris 12 companies

novembris 14 companies

decembris 8 companies