| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1999 | 95 | 88 |
21.5%
|
|
| 2000 | 184 | 155 |
37.6%
|
|
| 2001 | 127 | 118 |
28.8%
|
|
| 2002 | 48 | 42 |
10.3%
|
|
| 2003 | 7 | 8 |
1.9%
|
|
| 9997 | inconsistent | 0 | 0 |
0%
|
| 9998 | dk | 0 | 0 |
0%
|
| Sysmiss | 2832 | 2881 |