| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 9 |
4.8%
|
| 3 | 1 |
0.5%
|
|
| 5 | 1 |
0.5%
|
|
| 10 | 19 |
10.2%
|
|
| 15 | 24 |
12.8%
|
|
| 20 | 33 |
17.6%
|
|
| 25 | 33 |
17.6%
|
|
| 30 | 11 |
5.9%
|
|
| 35 | 4 |
2.1%
|
|
| 40 | 4 |
2.1%
|
|
| 45 | 2 |
1.1%
|
|
| 50 | 19 |
10.2%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 10 |
5.3%
|
|
| 70 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 100 | 14 |
7.5%
|
|
| Sysmiss | 173 |