| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 7 |
7.6%
|
|
| 1993 | 1 |
1.1%
|
|
| 1996 | 1 |
1.1%
|
|
| 1999 | 1 |
1.1%
|
|
| 2000 | 3 |
3.3%
|
|
| 2001 | 1 |
1.1%
|
|
| 2003 | 1 |
1.1%
|
|
| 2004 | 5 |
5.4%
|
|
| 2005 | 2 |
2.2%
|
|
| 2006 | 8 |
8.7%
|
|
| 2007 | 6 |
6.5%
|
|
| 2008 | 5 |
5.4%
|
|
| 2009 | 18 |
19.6%
|
|
| 2010 | 10 |
10.9%
|
|
| 2011 | 11 |
12%
|
|
| 2012 | 5 |
5.4%
|
|
| 2013 | 7 |
7.6%
|
|
| Sysmiss | 375 |