| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not received | 272 |
48.1%
|
| 2008 | 4 |
0.7%
|
|
| 2009 | 37 |
6.5%
|
|
| 2010 | 85 |
15%
|
|
| 2011 | 100 |
17.7%
|
|
| 2012 | 64 |
11.3%
|
|
| 4444 | No date recorded | 3 |
0.5%
|
| 6666 | Mother's report | 0 |
0%
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 272 |