Companies registered by month in 1991
- January - 1506 companies registered
- February - 1560 companies registered
- March - 1910 companies registered
- April - 1915 companies registered
- May - 1891 companies registered
- June - 1779 companies registered
- July - 1713 companies registered
- August - 1551 companies registered
- September - 1650 companies registered
- October - 1789 companies registered
- November - 1631 companies registered
- December - 1641 companies registered