| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
50%
|
|
| 1996 | 1 |
50%
|
|
| 7777 | Don't Know | 0 |
0%
|
| 9999 | Refused | 0 |
0%
|
| Sysmiss | 4515 |