| Value | Category | Cases | |
|---|---|---|---|
| 0 | 144 |
9.6%
|
|
| 1 | 19 |
1.3%
|
|
| 2 | 988 |
65.7%
|
|
| 3 | 349 |
23.2%
|
|
| 888 | 2 |
0.1%
|
|
| 999 | 1 |
0.1%
|
|
| Sysmiss | 92 |