| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 178 |
8.7%
|
| 1995 | 60 |
2.9%
|
|
| 1996 | 120 |
5.8%
|
|
| 1997 | 182 |
8.9%
|
|
| 1998 | 336 |
16.4%
|
|
| 1999 | 716 |
34.9%
|
|
| 2000 | 375 |
18.3%
|
|
| 4444 | marked on card | 66 |
3.2%
|
| 6666 | mother reported | 21 |
1%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 13931 |