| Value | Category | Cases | |
|---|---|---|---|
| 1 | Are taken directly from establishment records | 14967 |
51.4%
|
| 2 | Are estimates computed with some precision | 9723 |
33.4%
|
| 3 | Are arbitrary and unreliable numbers | 628 |
2.2%
|
| 4 | Are in some case taken from books and in some case estimates | 3818 |
13.1%
|