| Value | Category | Cases | |
|---|---|---|---|
| 0-6 months | 9 |
6.1%
|
|
| 6-12 months | 27 |
18.4%
|
|
| I don't know | 33 |
22.4%
|
|
| Indefinately | 42 |
28.6%
|
|
| More than one year | 33 |
22.4%
|
|
| Refuse to answer | 3 |
2%
|