1980

1980: 17 922 companies

Januari 2 038 companies

Februari 1 188 companies

Maret 1 493 companies

April 1 751 companies

Mei 1 612 companies

Juni 1 319 companies

Juli 1 664 companies

Agustus 1 382 companies

September 1 317 companies

Oktober 1 560 companies

November 1 371 companies

Desember 1 227 companies