| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 2 |
9.5%
|
|
| 2009 | 8 |
38.1%
|
|
| 2010 | 10 |
47.6%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 1 |
4.8%
|
| Sysmiss | 9104 |