| Value | Category | Cases | |
|---|---|---|---|
| 1994 | 1 |
0.6%
|
|
| 2002 | 2 |
1.2%
|
|
| 2003 | 8 |
4.8%
|
|
| 2004 | 59 |
35.3%
|
|
| 2005 | 66 |
39.5%
|
|
| 2006 | 28 |
16.8%
|
|
| 9998 | 3 |
1.8%
|
|
| Sysmiss | 98 |