| Value | Category | Cases | |
|---|---|---|---|
| 1 | Only one | 28 |
0.1%
|
| 2 | 2--4 | 58 |
0.2%
|
| 3 | 5--9 | 8 |
0%
|
| 4 | 10--19 | 3 |
0%
|
| 5 | 20+ | 3 |
0%
|
| Sysmiss | 23380 |