| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 32 |
13.2%
|
|
| 2001 | 125 |
51.7%
|
|
| 2002 | 57 |
23.6%
|
|
| 2003 | 22 |
9.1%
|
|
| 2004 | 4 |
1.7%
|
|
| 2005 | 2 |
0.8%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 29830 |