| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 83 |
17.3%
|
| 1995 | 40 |
8.3%
|
|
| 1996 | 108 |
22.5%
|
|
| 1997 | 98 |
20.4%
|
|
| 1998 | 66 |
13.7%
|
|
| 1999 | 28 |
5.8%
|
|
| 2000 | 11 |
2.3%
|
|
| 4444 | marked on card | 41 |
8.5%
|
| 6666 | mother reported | 6 |
1.2%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 15504 |