Companies registered by month in 1921
- January - 28 companies registered
- February - 36 companies registered
- March - 36 companies registered
- April - 36 companies registered
- May - 33 companies registered
- June - 25 companies registered
- July - 35 companies registered
- August - 30 companies registered
- September - 33 companies registered
- October - 34 companies registered
- November - 32 companies registered
- December - 40 companies registered