| Value | Category | Cases | |
|---|---|---|---|
| 4 | 3 |
0.1%
|
|
| 2002 | 13 |
0.5%
|
|
| 2003 | 1951 |
73.5%
|
|
| 2004 | 686 |
25.8%
|
|
| 9999 | 2 |
0.1%
|
|
| Sysmiss | 20367 |