| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| 0 | None | 20 |
16.1%
|
| 1 | 8 |
6.5%
|
|
| 2 | 17 |
13.7%
|
|
| 3 | 3 |
2.4%
|
|
| 4 | 1 |
0.8%
|
|
| 5 | 13 |
10.5%
|
|
| 6 | 2 |
1.6%
|
|
| 7 | 1 |
0.8%
|
|
| 10 | 7 |
5.6%
|
|
| 12 | 2 |
1.6%
|
|
| 15 | 6 |
4.8%
|
|
| 18 | 1 |
0.8%
|
|
| 20 | 3 |
2.4%
|
|
| 25 | 5 |
4%
|
|
| 30 | 6 |
4.8%
|
|
| 35 | 3 |
2.4%
|
|
| 36 | 1 |
0.8%
|
|
| 40 | 2 |
1.6%
|
|
| 45 | 2 |
1.6%
|
|
| 50 | 5 |
4%
|
|
| 55 | 1 |
0.8%
|
|
| 60 | 6 |
4.8%
|
|
| 70 | 4 |
3.2%
|
|
| 80 | 2 |
1.6%
|
|
| 90 | 2 |
1.6%
|
|
| Sysmiss | 95 |