| Value | Category | Cases | |
|---|---|---|---|
| 0 | 15 |
7.5%
|
|
| 1 | 26 |
13.1%
|
|
| 2 | 22 |
11.1%
|
|
| 3 | 15 |
7.5%
|
|
| 4 | 14 |
7%
|
|
| 5 | 10 |
5%
|
|
| 6 | 10 |
5%
|
|
| 7 | 13 |
6.5%
|
|
| 8 | 12 |
6%
|
|
| 9 | 11 |
5.5%
|
|
| 10 | 10 |
5%
|
|
| 11 | 16 |
8%
|
|
| 12 | 5 |
2.5%
|
|
| 13 | 8 |
4%
|
|
| 14 | more than 13 years | 12 |
6%
|
| Sysmiss | 1 |