| Value | Category | Cases | |
|---|---|---|---|
| 1994 | 1 |
3.7%
|
|
| 1999 | 2 |
7.4%
|
|
| 2000 | 1 |
3.7%
|
|
| 2001 | 1 |
3.7%
|
|
| 2002 | 1 |
3.7%
|
|
| 2006 | 4 |
14.8%
|
|
| 2007 | 4 |
14.8%
|
|
| 2008 | 2 |
7.4%
|
|
| 2009 | 1 |
3.7%
|
|
| 2010 | 5 |
18.5%
|
|
| 2011 | 5 |
18.5%
|
|
| Sysmiss | 434 |