| Value | Category | Cases | |
|---|---|---|---|
| 12 | 2737 |
99.5%
|
|
| 13 | 9 |
0.3%
|
|
| 31 | 4 |
0.1%
|
|
| 88 | Don't know | 0 |
0%
|
| 99 | Missing | 0 |
0%
|
| Sysmiss | 15 |