| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
3.2%
|
|
| 2001 | 2 |
6.5%
|
|
| 2002 | 1 |
3.2%
|
|
| 2003 | 1 |
3.2%
|
|
| 2004 | 1 |
3.2%
|
|
| 2006 | 1 |
3.2%
|
|
| 2007 | 1 |
3.2%
|
|
| 2008 | 3 |
9.7%
|
|
| 2009 | 3 |
9.7%
|
|
| 2010 | 4 |
12.9%
|
|
| 2011 | 3 |
9.7%
|
|
| 2012 | 5 |
16.1%
|
|
| 2013 | 5 |
16.1%
|
|
| Sysmiss | 19 |