Companies registered by month in 1991
- January - 1523 companies registered
- February - 1585 companies registered
- March - 1936 companies registered
- April - 1947 companies registered
- May - 1923 companies registered
- June - 1806 companies registered
- July - 1737 companies registered
- August - 1577 companies registered
- September - 1683 companies registered
- October - 1827 companies registered
- November - 1664 companies registered
- December - 1677 companies registered