| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.1%
|
| 5 | 5 |
5.3%
|
|
| 6 | 1 |
1.1%
|
|
| 8 | 3 |
3.2%
|
|
| 10 | 16 |
17%
|
|
| 12 | 1 |
1.1%
|
|
| 15 | 10 |
10.6%
|
|
| 18 | 2 |
2.1%
|
|
| 20 | 24 |
25.5%
|
|
| 22 | 1 |
1.1%
|
|
| 25 | 9 |
9.6%
|
|
| 30 | 5 |
5.3%
|
|
| 33 | 1 |
1.1%
|
|
| 35 | 2 |
2.1%
|
|
| 40 | 6 |
6.4%
|
|
| 45 | 1 |
1.1%
|
|
| 50 | 5 |
5.3%
|
|
| 100 | 1 |
1.1%
|
|
| Sysmiss | 26 |