| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 1 |
3.6%
|
|
| 1997 | 2 |
7.1%
|
|
| 1998 | 1 |
3.6%
|
|
| 2000 | 1 |
3.6%
|
|
| 2002 | 1 |
3.6%
|
|
| 2003 | 1 |
3.6%
|
|
| 2004 | 1 |
3.6%
|
|
| 2005 | 3 |
10.7%
|
|
| 2006 | 1 |
3.6%
|
|
| 2007 | 2 |
7.1%
|
|
| 2008 | 2 |
7.1%
|
|
| 2009 | 1 |
3.6%
|
|
| 2011 | 2 |
7.1%
|
|
| 2012 | 4 |
14.3%
|
|
| 2013 | 2 |
7.1%
|
|
| 2014 | 1 |
3.6%
|
|
| 2015 | 2 |
7.1%
|
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 38690 |