| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
1.7%
|
| 0 | 1 |
0.6%
|
|
| 10 | 2 |
1.1%
|
|
| 30 | 14 |
8%
|
|
| 35 | 3 |
1.7%
|
|
| 40 | 16 |
9.1%
|
|
| 45 | 1 |
0.6%
|
|
| 50 | 21 |
12%
|
|
| 55 | 2 |
1.1%
|
|
| 60 | 39 |
22.3%
|
|
| 65 | 20 |
11.4%
|
|
| 70 | 30 |
17.1%
|
|
| 75 | 11 |
6.3%
|
|
| 80 | 12 |
6.9%
|
|
| Sysmiss | 344 |