| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
2%
|
| -9 | Don't know (spontaneous) | 1 |
2%
|
| 0 | 18 |
36%
|
|
| 1 | 8 |
16%
|
|
| 2 | 5 |
10%
|
|
| 3 | 4 |
8%
|
|
| 5 | 1 |
2%
|
|
| 6 | 1 |
2%
|
|
| 10 | 2 |
4%
|
|
| 15 | 2 |
4%
|
|
| 16 | 1 |
2%
|
|
| 20 | 1 |
2%
|
|
| 25 | 1 |
2%
|
|
| 27 | 1 |
2%
|
|
| 35 | 1 |
2%
|
|
| 85 | 1 |
2%
|
|
| 100 | 1 |
2%
|
|
| Sysmiss | 295 |