| Value | Category | Cases | |
|---|---|---|---|
| 1984 | 1 |
4.2%
|
|
| 1994 | 1 |
4.2%
|
|
| 1996 | 1 |
4.2%
|
|
| 1997 | 1 |
4.2%
|
|
| 1999 | 1 |
4.2%
|
|
| 2000 | 2 |
8.3%
|
|
| 2002 | 1 |
4.2%
|
|
| 2003 | 1 |
4.2%
|
|
| 2004 | 2 |
8.3%
|
|
| 2005 | 3 |
12.5%
|
|
| 2006 | 4 |
16.7%
|
|
| 2007 | 1 |
4.2%
|
|
| 2009 | 2 |
8.3%
|
|
| 9999 | 3 |
12.5%
|
|
| Sysmiss | 1173 |