| Value | Category | Cases | |
|---|---|---|---|
| 1 | Are taken directly from establishment records | 388 |
37.7%
|
| 2 | Are estimates computed with some precision | 480 |
46.6%
|
| 3 | Are arbitrary and unreliable numbers | 19 |
1.8%
|
| 4 | Are in some case taken from books in some case estimates | 143 |
13.9%
|
| Sysmiss | 2 |