| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1998 | 62 | 58 |
12.4%
|
|
| 1999 | 190 | 173 |
37.1%
|
|
| 2000 | 167 | 148 |
31.6%
|
|
| 2001 | 81 | 70 |
15%
|
|
| 2002 | 15 | 15 |
3.1%
|
|
| 2003 | 4 | 4 |
0.8%
|
|
| 9997 | inconsistent | 0 | 0 |
0%
|
| 9998 | dk | 0 | 0 |
0%
|
| Sysmiss | 2774 | 2825 |