| Value | Category | Cases | |
|---|---|---|---|
| 1 | Are taken directly from establishment records | 73 |
20.1%
|
| 2 | Are estimates computed with some precision | 192 |
52.7%
|
| 3 | Are arbitrary and unreliable numbers | 2 |
0.5%
|
| 4 | Are in some case taken from books and in some case estimates | 97 |
26.6%
|
| Sysmiss | 1 |