| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, for pay | 78 |
1.7%
|
| 2 | Yes, unpaid | 187 |
4.1%
|
| 3 | No | 4282 |
94%
|
| 9 | Missing | 9 |
0.2%
|
| Sysmiss | 16427 |