| Value | Category |
|---|---|
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | If it is 11-19 persons |
| 12 | If it is 20-49 persons |
| 13 | If it is 50-99 persons |
| 14 | If it is 100-249 persons |
| 15 | If it is 250 and more persons |
| 16 | Do not know exactly but less than 11 persons |
| 17 | Do not know exactly but more than 10 persons |
| Sysmiss |