| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than 1 year | 4 |
2.1%
|
| 1 | 8 |
4.3%
|
|
| 2 | 15 |
8%
|
|
| 3 | 20 |
10.7%
|
|
| 4 | 22 |
11.8%
|
|
| 5 | 17 |
9.1%
|
|
| 6 | 15 |
8%
|
|
| 7 | 17 |
9.1%
|
|
| 8 | 17 |
9.1%
|
|
| 9 | 14 |
7.5%
|
|
| 10 | 9 |
4.8%
|
|
| 11 | 10 |
5.3%
|
|
| 12 | 19 |
10.2%
|
|
| Sysmiss | 25 |