Companies registered by month in 1991
- January - 1525 companies registered
- February - 1581 companies registered
- March - 1931 companies registered
- April - 1936 companies registered
- May - 1918 companies registered
- June - 1802 companies registered
- July - 1733 companies registered
- August - 1574 companies registered
- September - 1680 companies registered
- October - 1824 companies registered
- November - 1658 companies registered
- December - 1678 companies registered