| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 5 | 7 |
6.7%
|
|
| 6 | 1 |
1%
|
|
| 10 | 8 |
7.6%
|
|
| 13 | 1 |
1%
|
|
| 15 | 5 |
4.8%
|
|
| 17 | 1 |
1%
|
|
| 19 | 1 |
1%
|
|
| 20 | 17 |
16.2%
|
|
| 25 | 11 |
10.5%
|
|
| 30 | 12 |
11.4%
|
|
| 35 | 3 |
2.9%
|
|
| 40 | 7 |
6.7%
|
|
| 45 | 4 |
3.8%
|
|
| 50 | 5 |
4.8%
|
|
| 53 | 1 |
1%
|
|
| 55 | 1 |
1%
|
|
| 60 | 5 |
4.8%
|
|
| 70 | 4 |
3.8%
|
|
| 75 | 1 |
1%
|
|
| 80 | 5 |
4.8%
|
|
| 90 | 4 |
3.8%
|
|
| 100 | 1 |
1%
|
|
| Sysmiss | 137 |