| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 1 |
0%
|
|
| 2003 | 6 |
0.1%
|
|
| 2004 | 916 |
22.4%
|
|
| 2005 | 900 |
22%
|
|
| 2006 | 39 |
1%
|
|
| 2007 | 1160 |
28.3%
|
|
| 2008 | 1041 |
25.4%
|
|
| 2009 | 24 |
0.6%
|
|
| 2010 | 5 |
0.1%
|
|
| Sysmiss | 2489 |