| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
4.5%
|
|
| 1 | 43 |
48.9%
|
|
| 2 | 15 |
17%
|
|
| 3 | 5 |
5.7%
|
|
| 4 | 8 |
9.1%
|
|
| 5 | 8 |
9.1%
|
|
| 6 | 2 |
2.3%
|
|
| 15 | 1 |
1.1%
|
|
| 20 | 2 |
2.3%
|
|
| Sysmiss | 1988 |