| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
13%
|
| 4 | 1 |
0.5%
|
|
| 5 | 7 |
3.4%
|
|
| 8 | 2 |
1%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 19 |
9.1%
|
|
| 12 | 2 |
1%
|
|
| 13 | 2 |
1%
|
|
| 15 | 13 |
6.3%
|
|
| 20 | 36 |
17.3%
|
|
| 23 | 1 |
0.5%
|
|
| 25 | 7 |
3.4%
|
|
| 30 | 24 |
11.5%
|
|
| 33 | 2 |
1%
|
|
| 35 | 3 |
1.4%
|
|
| 40 | 13 |
6.3%
|
|
| 43 | 1 |
0.5%
|
|
| 45 | 2 |
1%
|
|
| 50 | 26 |
12.5%
|
|
| 60 | 5 |
2.4%
|
|
| 70 | 2 |
1%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 83 | 1 |
0.5%
|
|
| 90 | 2 |
1%
|
|
| 100 | 6 |
2.9%
|
|
| 150 | 1 |
0.5%
|
|
| Sysmiss | 752 |