| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 68 |
27.6%
|
|
| 2001 | 104 |
42.3%
|
|
| 2002 | 53 |
21.5%
|
|
| 2003 | 16 |
6.5%
|
|
| 2004 | 3 |
1.2%
|
|
| 2005 | 2 |
0.8%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 29826 |