| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
9.2%
|
| 1 | 8 |
9.2%
|
|
| 2 | 2 |
2.3%
|
|
| 5 | 3 |
3.4%
|
|
| 10 | 4 |
4.6%
|
|
| 12 | 1 |
1.1%
|
|
| 15 | 4 |
4.6%
|
|
| 20 | 5 |
5.7%
|
|
| 25 | 3 |
3.4%
|
|
| 26 | 1 |
1.1%
|
|
| 30 | 23 |
26.4%
|
|
| 32 | 1 |
1.1%
|
|
| 35 | 1 |
1.1%
|
|
| 40 | 5 |
5.7%
|
|
| 45 | 12 |
13.8%
|
|
| 50 | 4 |
4.6%
|
|
| 54 | 1 |
1.1%
|
|
| 59 | 1 |
1.1%
|
|
| Sysmiss | 626 |