| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 5 |
10.6%
|
|
| 2003 | 6 |
12.8%
|
|
| 2004 | 22 |
46.8%
|
|
| 2005 | 13 |
27.7%
|
|
| 2006 | 1 |
2.1%
|
|
| Sysmiss | 8087 |