| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.1%
|
| 0 | 332 |
62.5%
|
|
| 5 | 1 |
0.2%
|
|
| 6 | 1 |
0.2%
|
|
| 10 | 12 |
2.3%
|
|
| 15 | 2 |
0.4%
|
|
| 20 | 20 |
3.8%
|
|
| 25 | 2 |
0.4%
|
|
| 28 | 1 |
0.2%
|
|
| 30 | 20 |
3.8%
|
|
| 33 | 2 |
0.4%
|
|
| 35 | 2 |
0.4%
|
|
| 40 | 13 |
2.4%
|
|
| 47 | 1 |
0.2%
|
|
| 50 | 37 |
7%
|
|
| 55 | 1 |
0.2%
|
|
| 60 | 10 |
1.9%
|
|
| 65 | 4 |
0.8%
|
|
| 70 | 17 |
3.2%
|
|
| 75 | 2 |
0.4%
|
|
| 80 | 9 |
1.7%
|
|
| 90 | 5 |
0.9%
|
|
| 100 | 31 |
5.8%
|
|
| Sysmiss | 300 |