| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1 |
1%
|
|
| 2000 | 6 |
6.1%
|
|
| 2001 | 11 |
11.1%
|
|
| 2002 | 8 |
8.1%
|
|
| 2003 | 9 |
9.1%
|
|
| 2004 | 2 |
2%
|
|
| 2005 | 1 |
1%
|
|
| 2006 | 1 |
1%
|
|
| 2007 | 6 |
6.1%
|
|
| 2009 | 1 |
1%
|
|
| 2011 | 1 |
1%
|
|
| 2012 | 4 |
4%
|
|
| 2013 | 16 |
16.2%
|
|
| 2014 | 9 |
9.1%
|
|
| 2015 | 8 |
8.1%
|
|
| 2016 | 5 |
5.1%
|
|
| 2017 | 10 |
10.1%
|
|
| Sysmiss | 66 |