| Value | Category | Cases | |
|---|---|---|---|
| 0 | 672 |
99.3%
|
|
| 1 | 1 |
0.1%
|
|
| 2 | 3 |
0.4%
|
|
| 9 | 1 |
0.1%
|
|
| Sysmiss | 1603 |