| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 1 |
0.1%
|
|
| 2004 | 216 |
26.8%
|
|
| 2005 | 265 |
32.8%
|
|
| 2006 | 220 |
27.3%
|
|
| 2007 | 79 |
9.8%
|
|
| 2008 | 13 |
1.6%
|
|
| 9997 | Inconsistent | 13 |
1.6%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 7637 |