| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
3.3%
|
|
| 1996 | 1 |
3.3%
|
|
| 1998 | 1 |
3.3%
|
|
| 1999 | 3 |
10%
|
|
| 2000 | 5 |
16.7%
|
|
| 2002 | 1 |
3.3%
|
|
| 2003 | 3 |
10%
|
|
| 2005 | 2 |
6.7%
|
|
| 2006 | 3 |
10%
|
|
| 2007 | 5 |
16.7%
|
|
| 2008 | 4 |
13.3%
|
|
| 9999 | 1 |
3.3%
|
|
| Sysmiss | 416 |