| Value | Category | Cases | |
|---|---|---|---|
| 1 | government | 6987 |
64.7%
|
| 2 | personal (obligatory) | 3386 |
31.4%
|
| 3 | personal (optional) | 19 |
0.2%
|
| 4 | government and personal (optional) | 92 |
0.9%
|
| 5 | personal (obligatory) and personal (optional) | 194 |
1.8%
|
| 6 | don't know' | 116 |
1.1%
|
| Sysmiss | 1321 |