| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2 | 4 |
0.2%
|
| 2 | 3 | 29 |
1.7%
|
| 3 | 4 | 77 |
4.6%
|
| 4 | 5 | 181 |
10.7%
|
| 5 | 6 | 190 |
11.3%
|
| 6 | 7 | 165 |
9.8%
|
| 7 | 8 | 228 |
13.5%
|
| 8 | 9 | 205 |
12.2%
|
| 9 | 10 | 156 |
9.2%
|
| 10 | 11 | 71 |
4.2%
|
| 11 | 12 | 106 |
6.3%
|
| 12 | 13 | 39 |
2.3%
|
| 13 | 14 | 29 |
1.7%
|
| 14 | 15+ | 207 |
12.3%
|
| Missing value | 352 |