| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 2006 | 2 | 2 |
0.8%
|
|
| 2007 | 11 | 11 |
4.5%
|
|
| 2008 | 5 | 5 |
2.1%
|
|
| 2009 | 30 | 30 |
12.6%
|
|
| 2010 | 64 | 63 |
26.8%
|
|
| 2011 | 59 | 58 |
24.6%
|
|
| 9997 | Inconsistent (Secondary Editing) | 1 | 1 |
0.5%
|
| 9999 | Missing | 67 | 67 |
28.2%
|
| Sysmiss | 4588 | 4478 |