| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 |
0.4%
|
|
| 1 | 4 |
0.7%
|
|
| 2 | 15 |
2.8%
|
|
| 3 | 64 |
11.9%
|
|
| 4 | 80 |
14.9%
|
|
| 5 | 117 |
21.8%
|
|
| 6 | 253 |
47.1%
|
|
| 7 | 2 |
0.4%
|
|
| Sysmiss | 5 |