| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than 1 year | 0 |
0%
|
| 1 | 3 |
2.5%
|
|
| 2 | 11 |
9.2%
|
|
| 3 | 6 |
5%
|
|
| 4 | 22 |
18.5%
|
|
| 5 | 15 |
12.6%
|
|
| 6 | 7 |
5.9%
|
|
| 7 | 10 |
8.4%
|
|
| 8 | 12 |
10.1%
|
|
| 9 | 15 |
12.6%
|
|
| 10 | 1 |
0.8%
|
|
| 11 | 2 |
1.7%
|
|
| 12 | 15 |
12.6%
|
|
| 98 | don't know | 0 |
0%
|
| Sysmiss | 93 |