| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2249 |
79.5%
|
|
| 1 | 546 |
19.3%
|
|
| 888 | 5 |
0.2%
|
|
| 999 | 28 |
1%
|
|
| Sysmiss | 2001 |