| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 3340 |
97.8%
|
| 2 | 1 or 2 times | 38 |
1.1%
|
| 3 | 3 to 9 times | 16 |
0.5%
|
| 4 | 10 or more times | 22 |
0.6%
|
| Sysmiss | 215 |