| Value | Category | Cases | |
|---|---|---|---|
| 98 | 2 |
1.4%
|
|
| 2000 | 2 |
1.4%
|
|
| 2001 | 4 |
2.7%
|
|
| 2002 | 14 |
9.5%
|
|
| 2003 | 59 |
39.9%
|
|
| 2004 | 67 |
45.3%
|
|
| Sysmiss | 364 |