| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 554 |
9.5%
|
| 0 | 122 |
2.1%
|
|
| 1 | 317 |
5.4%
|
|
| 2 | 1308 |
22.4%
|
|
| 3 | 1441 |
24.7%
|
|
| 4 | 1065 |
18.2%
|
|
| 5 | 643 |
11%
|
|
| 6 | 263 |
4.5%
|
|
| 7 | 56 |
1%
|
|
| 8 | 44 |
0.8%
|
|
| 9 | 11 |
0.2%
|
|
| 10 | 12 |
0.2%
|
|
| 11 | 1 |
0%
|
|
| 12 | 4 |
0.1%
|
|
| 14 | 1 |
0%
|
|
| 20 | 1 |
0%
|
|
| Sysmiss | 4829 |