| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2008 |
89.2%
|
| 2 | 1 or 2 times | 135 |
6%
|
| 3 | 3 to 9 times | 57 |
2.5%
|
| 4 | 10 or more times | 50 |
2.2%
|
| Sysmiss | 46 |