| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
0.4%
|
| 0 | 198 |
71.7%
|
|
| 1 | 13 |
4.7%
|
|
| 2 | 4 |
1.4%
|
|
| 3 | 4 |
1.4%
|
|
| 4 | 1 |
0.4%
|
|
| 5 | 16 |
5.8%
|
|
| 9 | 1 |
0.4%
|
|
| 10 | 17 |
6.2%
|
|
| 15 | 3 |
1.1%
|
|
| 18 | 2 |
0.7%
|
|
| 20 | 7 |
2.5%
|
|
| 25 | 2 |
0.7%
|
|
| 30 | 3 |
1.1%
|
|
| 45 | 1 |
0.4%
|
|
| 90 | 2 |
0.7%
|
|
| 100 | 1 |
0.4%
|
|
| Sysmiss | 679 |