| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2767 |
13%
|
|
| 1 | 16438 |
77.1%
|
|
| 2 | 1562 |
7.3%
|
|
| 3 | 481 |
2.3%
|
|
| 4 | 66 |
0.3%
|
|
| 5 | 12 |
0.1%
|
|
| Sysmiss | 4003 |