| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 4344 |
77.2%
|
| 2 | 1 or 2 times | 947 |
16.8%
|
| 3 | 3 to 9 times | 214 |
3.8%
|
| 4 | 10 or more times | 124 |
2.2%
|
| Sysmiss | 28 |