1981

1981: 18 235 companies

januar 1 464 companies

februar 1 629 companies

marec 1 835 companies

april 1 690 companies

maj 1 564 companies

junij 1 567 companies

julij 1 400 companies

avgust 1 366 companies

september 1 522 companies

oktober 1 405 companies

november 1 405 companies

december 1 388 companies