| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 100 |
2.3%
|
|
| 1996 | 877 |
19.8%
|
|
| 1997 | 845 |
19.1%
|
|
| 1998 | 886 |
20%
|
|
| 1999 | 931 |
21%
|
|
| 2000 | 789 |
17.8%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 27247 |