| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
4.4%
|
| 0 | 5 |
1.3%
|
|
| 1 | 24 |
6.2%
|
|
| 2 | 5 |
1.3%
|
|
| 5 | 4 |
1%
|
|
| 10 | 3 |
0.8%
|
|
| 15 | 2 |
0.5%
|
|
| 20 | 2 |
0.5%
|
|
| 25 | 9 |
2.3%
|
|
| 27 | 1 |
0.3%
|
|
| 30 | 4 |
1%
|
|
| 33 | 1 |
0.3%
|
|
| 34 | 1 |
0.3%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 4 |
1%
|
|
| 47 | 1 |
0.3%
|
|
| 50 | 33 |
8.5%
|
|
| 51 | 1 |
0.3%
|
|
| 55 | 1 |
0.3%
|
|
| 60 | 3 |
0.8%
|
|
| 61 | 1 |
0.3%
|
|
| 67 | 1 |
0.3%
|
|
| 70 | 6 |
1.5%
|
|
| 75 | 3 |
0.8%
|
|
| 80 | 9 |
2.3%
|
|
| 90 | 5 |
1.3%
|
|
| 95 | 2 |
0.5%
|
|
| 99 | 3 |
0.8%
|
|
| 100 | 237 |
60.9%
|
|
| Sysmiss | 948 |