| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| 0 | 2 |
1.7%
|
|
| 1 | 1 |
0.8%
|
|
| 2 | 1 |
0.8%
|
|
| 5 | 1 |
0.8%
|
|
| 10 | 9 |
7.5%
|
|
| 15 | 14 |
11.7%
|
|
| 20 | 11 |
9.2%
|
|
| 25 | 16 |
13.3%
|
|
| 30 | 22 |
18.3%
|
|
| 32 | 1 |
0.8%
|
|
| 35 | 4 |
3.3%
|
|
| 40 | 11 |
9.2%
|
|
| 45 | 14 |
11.7%
|
|
| 50 | 9 |
7.5%
|
|
| 52 | 1 |
0.8%
|
|
| 55 | 2 |
1.7%
|
|
| Sysmiss | 1296 |