1980

1980: 17 922 companies

januari 2 038 companies

februari 1 188 companies

maart 1 493 companies

april 1 751 companies

mei 1 612 companies

juni 1 319 companies

juli 1 664 companies

augustus 1 382 companies

september 1 317 companies

oktober 1 560 companies

november 1 371 companies

december 1 227 companies