| Value | Category | Cases | |
|---|---|---|---|
| 1 | 662 |
89.2%
|
|
| 2 | 51 |
6.9%
|
|
| 3 | 17 |
2.3%
|
|
| 4 | 9 |
1.2%
|
|
| 5 | 2 |
0.3%
|
|
| 6 | 1 |
0.1%
|
|
| Sysmiss | 2001 |