| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 68 |
27.9%
|
|
| 2001 | 103 |
42.2%
|
|
| 2002 | 52 |
21.3%
|
|
| 2003 | 16 |
6.6%
|
|
| 2004 | 3 |
1.2%
|
|
| 2005 | 2 |
0.8%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 29828 |