| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 61 |
26.3%
|
| 2 | Months | 99 |
42.7%
|
| 3 | Years | 71 |
30.6%
|
| 9 | Special answers | 1 |
0.4%
|
| Sysmiss | 10138 |