| Value | Category | Cases | |
|---|---|---|---|
| 0 | 85 |
97.7%
|
|
| 3 | 1 |
1.1%
|
|
| 20 | 1 |
1.1%
|
|
| 999 | 999. don't know | 0 |
0%
|
| Sysmiss | 12 |