Companies registered by month in 1991
- January - 1506 companies registered
- February - 1559 companies registered
- March - 1913 companies registered
- April - 1910 companies registered
- May - 1886 companies registered
- June - 1772 companies registered
- July - 1710 companies registered
- August - 1547 companies registered
- September - 1645 companies registered
- October - 1781 companies registered
- November - 1630 companies registered
- December - 1640 companies registered