| Value | Category | Cases | |
|---|---|---|---|
| 0 | 595 |
72.4%
|
|
| 1 | 170 |
20.7%
|
|
| 2 | 37 |
4.5%
|
|
| 3 | 6 |
0.7%
|
|
| 4 | 4 |
0.5%
|
|
| 5 | 1 |
0.1%
|
|
| 6 | 1 |
0.1%
|
|
| 8 | 2 |
0.2%
|
|
| 10 | 6 |
0.7%
|
|
| Sysmiss | 1998 |