| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 3 | 1 |
1.1%
|
|
| 5 | 2 |
2.2%
|
|
| 10 | 15 |
16.7%
|
|
| 12 | 1 |
1.1%
|
|
| 13 | 1 |
1.1%
|
|
| 15 | 10 |
11.1%
|
|
| 18 | 2 |
2.2%
|
|
| 20 | 18 |
20%
|
|
| 24 | 1 |
1.1%
|
|
| 25 | 9 |
10%
|
|
| 28 | 2 |
2.2%
|
|
| 30 | 15 |
16.7%
|
|
| 35 | 5 |
5.6%
|
|
| 40 | 2 |
2.2%
|
|
| 50 | 2 |
2.2%
|
|
| 60 | 2 |
2.2%
|
|
| 80 | 2 |
2.2%
|
|
| Sysmiss | 510 |