| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, for pay | 28 |
3.5%
|
| 2 | Yes, unpaid | 7 |
0.9%
|
| 3 | No | 760 |
95.4%
|
| 9 | Missing | 2 |
0.3%
|
| Sysmiss | 2526 |