| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 18 |
0.3%
|
|
| 2004 | 1168 |
18.9%
|
|
| 2005 | 1192 |
19.3%
|
|
| 2006 | 1258 |
20.4%
|
|
| 2007 | 1163 |
18.9%
|
|
| 2008 | 1302 |
21.1%
|
|
| 2009 | 64 |
1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 32350 |