| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 0 |
0%
|
| 1994 | 16 |
1.5%
|
|
| 1995 | 145 |
13.3%
|
|
| 1996 | 222 |
20.3%
|
|
| 1997 | 329 |
30.1%
|
|
| 1998 | 369 |
33.7%
|
|
| 1999 | 13 |
1.2%
|
|
| 4444 | Marked on card | 0 |
0%
|
| 6666 | Mother reported | 0 |
0%
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| 9999 | Missing | 0 | |
| Sysmiss | 2204 |