| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 2122 |
45.3%
|
| 2 | normal | 1526 |
32.6%
|
| 3 | low | 628 |
13.4%
|
| 4 | none, not in operation | 407 |
8.7%
|
| Sysmiss | 5426 |