| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 2 |
0.8%
|
|
| 1998 | 1 |
0.4%
|
|
| 2006 | 1 |
0.4%
|
|
| 2008 | 2 |
0.8%
|
|
| 2010 | 2 |
0.8%
|
|
| 2011 | 6 |
2.3%
|
|
| 2012 | 18 |
6.9%
|
|
| 2013 | 28 |
10.7%
|
|
| 2014 | 23 |
8.8%
|
|
| 9888 | CONTINUING PROGRAMM | 178 |
68.2%
|
| Sysmiss | 6 |