| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 6 |
0.6%
|
|
| 2002 | 48 |
5.1%
|
|
| 2003 | 101 |
10.7%
|
|
| 2004 | 115 |
12.2%
|
|
| 2005 | 213 |
22.6%
|
|
| 2006 | 311 |
33%
|
|
| 2007 | 148 |
15.7%
|
|
| Sysmiss | 24058 |