| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 31 |
6.4%
|
| 1995 | 53 |
11%
|
|
| 1996 | 121 |
25.2%
|
|
| 1997 | 105 |
21.8%
|
|
| 1998 | 69 |
14.3%
|
|
| 1999 | 32 |
6.7%
|
|
| 2000 | 20 |
4.2%
|
|
| 4444 | marked on card | 47 |
9.8%
|
| 6666 | mother reported | 3 |
0.6%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 15504 |