| Value | Category | Cases | |
|---|---|---|---|
| 0 | 323 |
17.3%
|
|
| 1 | 475 |
25.5%
|
|
| 2 | 554 |
29.7%
|
|
| 3 | 337 |
18.1%
|
|
| 4 | 107 |
5.7%
|
|
| 5 | 47 |
2.5%
|
|
| 6 | 13 |
0.7%
|
|
| 7 | 4 |
0.2%
|
|
| 8 | 2 |
0.1%
|
|
| 9 | 1 |
0.1%
|
|
| 16 | 1 |
0.1%
|
|
| 20 | 1 |
0.1%
|
|
| Missing value | 10 |