| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.1%
|
| 1 | 1 |
1.1%
|
|
| 2 | 1 |
1.1%
|
|
| 3 | 2 |
2.3%
|
|
| 5 | 8 |
9.1%
|
|
| 10 | 11 |
12.5%
|
|
| 12 | 1 |
1.1%
|
|
| 15 | 3 |
3.4%
|
|
| 20 | 8 |
9.1%
|
|
| 25 | 3 |
3.4%
|
|
| 30 | 36 |
40.9%
|
|
| 35 | 2 |
2.3%
|
|
| 40 | 4 |
4.5%
|
|
| 45 | 6 |
6.8%
|
|
| 48 | 1 |
1.1%
|
|
| Sysmiss | 936 |