| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
5.5%
|
| 0 | 24 |
5.8%
|
|
| 10 | 4 |
1%
|
|
| 15 | 1 |
0.2%
|
|
| 17 | 1 |
0.2%
|
|
| 20 | 7 |
1.7%
|
|
| 25 | 3 |
0.7%
|
|
| 30 | 15 |
3.6%
|
|
| 40 | 7 |
1.7%
|
|
| 45 | 1 |
0.2%
|
|
| 50 | 28 |
6.7%
|
|
| 51 | 1 |
0.2%
|
|
| 58 | 1 |
0.2%
|
|
| 60 | 9 |
2.2%
|
|
| 65 | 3 |
0.7%
|
|
| 70 | 15 |
3.6%
|
|
| 71 | 1 |
0.2%
|
|
| 75 | 2 |
0.5%
|
|
| 80 | 23 |
5.5%
|
|
| 83 | 1 |
0.2%
|
|
| 85 | 4 |
1%
|
|
| 86 | 1 |
0.2%
|
|
| 90 | 4 |
1%
|
|
| 91 | 1 |
0.2%
|
|
| 99 | 2 |
0.5%
|
|
| 100 | 234 |
56.3%
|
|
| Sysmiss | 1030 |