1981

1981: 17 577 companies

januar 1 726 companies

februar 931 companies

mars 1 431 companies

april 1 637 companies

mai 1 603 companies

juni 1 463 companies

juli 1 677 companies

august 1 442 companies

september 1 412 companies

oktober 1 562 companies

november 1 236 companies

desember 1 457 companies