| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 14 |
1.7%
|
|
| 1996 | 94 |
11.7%
|
|
| 1997 | 102 |
12.7%
|
|
| 1998 | 108 |
13.4%
|
|
| 1999 | 144 |
17.9%
|
|
| 2000 | 109 |
13.6%
|
|
| 2001 | 126 |
15.7%
|
|
| 2002 | 105 |
13.1%
|
|
| 2003 | 1 |
0.1%
|
|
| Sysmiss | 196 |