| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 1 |
0%
|
|
| 2004 | 1 |
0%
|
|
| 2005 | 5 |
0.1%
|
|
| 2006 | 2203 |
48.5%
|
|
| 2007 | 2328 |
51.3%
|
|
| 2008 | 4 |
0.1%
|
|
| Sysmiss | 28057 |