| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 25 |
5.2%
|
| 1995 | 58 |
12.1%
|
|
| 1996 | 131 |
27.2%
|
|
| 1997 | 96 |
20%
|
|
| 1998 | 69 |
14.3%
|
|
| 1999 | 26 |
5.4%
|
|
| 2000 | 22 |
4.6%
|
|
| 4444 | marked on card | 49 |
10.2%
|
| 6666 | mother reported | 5 |
1%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 15504 |