| Value | Category | Cases | |
|---|---|---|---|
| -9 | 598 |
18.4%
|
|
| -8 | 26 |
0.8%
|
|
| 2001 | 1 |
0%
|
|
| 2002 | 2 |
0.1%
|
|
| 2004 | 1 |
0%
|
|
| 2005 | 42 |
1.3%
|
|
| 2006 | 314 |
9.7%
|
|
| 2007 | 1105 |
34%
|
|
| 2008 | 1031 |
31.7%
|
|
| 2009 | 130 |
4%
|
|
| 2010 | 2 |
0.1%
|
|
| Sysmiss | 10 |