| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1990 |
89.2%
|
| 2 | 1 or 2 times | 91 |
4.1%
|
| 3 | 3 to 9 times | 68 |
3%
|
| 4 | 10 to 19 times | 30 |
1.3%
|
| 5 | 20 or more times | 51 |
2.3%
|
| Sysmiss | 35 |