Companies registered by month in 1991
- January - 1510 companies registered
- February - 1560 companies registered
- March - 1912 companies registered
- April - 1914 companies registered
- May - 1892 companies registered
- June - 1781 companies registered
- July - 1711 companies registered
- August - 1552 companies registered
- September - 1649 companies registered
- October - 1785 companies registered
- November - 1632 companies registered
- December - 1641 companies registered