| Value | Category | Cases | |
|---|---|---|---|
| -1 | True missing | 13 |
0.2%
|
| 0 | 0 | 459 |
8.4%
|
| 1 | 1 | 509 |
9.3%
|
| 2 | 2 | 890 |
16.2%
|
| 3 | 3 | 970 |
17.7%
|
| 4 | 4 | 690 |
12.6%
|
| 5 | 5 | 1948 |
35.6%
|