| Value | Category | Cases | |
|---|---|---|---|
| 0 | 50 |
24.6%
|
|
| 2 | 1 |
0.5%
|
|
| 3 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| 980 | 1 |
0.5%
|
|
| 999 | 142 |
70%
|
|
| 999999 | 7 |
3.4%
|
|
| Sysmiss | 6 |