| Value | Category | Cases | |
|---|---|---|---|
| 0 | 39 |
8.3%
|
|
| 1 | 231 |
49.3%
|
|
| 2 | 131 |
27.9%
|
|
| 3 | 45 |
9.6%
|
|
| 4 | 16 |
3.4%
|
|
| 5 | 4 |
0.9%
|
|
| 11 | 1 |
0.2%
|
|
| 12 | 2 |
0.4%
|
|
| Sysmiss | 2009 |