| Value | Category | Cases | |
|---|---|---|---|
| 98 | 1 |
0.2%
|
|
| 99 | 2 |
0.5%
|
|
| 1989 | 1 |
0.2%
|
|
| 1990 | 1 |
0.2%
|
|
| 1995 | 1 |
0.2%
|
|
| 1998 | 4 |
1%
|
|
| 1999 | 2 |
0.5%
|
|
| 2000 | 10 |
2.4%
|
|
| 2001 | 17 |
4.1%
|
|
| 2002 | 41 |
9.9%
|
|
| 2003 | 168 |
40.4%
|
|
| 2004 | 168 |
40.4%
|
|
| Sysmiss | 795 |