| Value | Category | Cases | |
|---|---|---|---|
| 1 | 4 |
0.5%
|
|
| 2 | 55 |
6.8%
|
|
| 3 | 316 |
38.9%
|
|
| 4 | 315 |
38.7%
|
|
| 5 | 6 |
0.7%
|
|
| 6 | 104 |
12.8%
|
|
| 7 | 13 |
1.6%
|
|
| Sysmiss | 2007 |