| Value | Category | Cases | |
|---|---|---|---|
| 99 | ND | 0 |
0%
|
| 2008 | 2 |
7.1%
|
|
| 2009 | 1 |
3.6%
|
|
| 2010 | 3 |
10.7%
|
|
| 2012 | 7 |
25%
|
|
| 2013 | 15 |
53.6%
|
|
| Sysmiss | 1472 |