Companies registered by month in 1991
- January - 1496 companies registered
- February - 1548 companies registered
- March - 1902 companies registered
- April - 1907 companies registered
- May - 1878 companies registered
- June - 1765 companies registered
- July - 1701 companies registered
- August - 1535 companies registered
- September - 1642 companies registered
- October - 1782 companies registered
- November - 1626 companies registered
- December - 1636 companies registered