| Value | Category | Cases | |
|---|---|---|---|
| 1 | One to five | 11 |
73.3%
|
| 2 | Six to ten | 4 |
26.7%
|
| 3 | Eleven to fifteen | 0 |
0%
|
| 4 | More than fifteen | 0 |
0%
|
| 99 | Not specified | 0 |
0%
|
| Sysmiss | 3983 |