| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 2 | 37 |
37%
|
|
| 3 | 15 |
15%
|
|
| 4 | 12 |
12%
|
|
| 5 | 8 |
8%
|
|
| 6 | 5 |
5%
|
|
| 7 | 3 |
3%
|
|
| 8 | 4 |
4%
|
|
| 10 | 1 |
1%
|
|
| 11 | 1 |
1%
|
|
| 12 | 3 |
3%
|
|
| 14 | 3 |
3%
|
|
| 18 | 1 |
1%
|
|
| 20 | 1 |
1%
|
|
| 37 | 1 |
1%
|
|
| 40 | 1 |
1%
|
|
| 43 | 1 |
1%
|
|
| 86 | 1 |
1%
|
|
| 197 | 1 |
1%
|
|
| Sysmiss | 501 |