| Value | Category | Cases | |
|---|---|---|---|
| 1 | I | 25659 |
20.7%
|
| 2 | II | 41700 |
33.6%
|
| 3 | III | 34210 |
27.6%
|
| 4 | IV | 22563 |
18.2%
|
| Sysmiss | 340 |