| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 2011 or earlier | 663 |
14.8%
|
| 2012 | 931 |
20.7%
|
|
| 2013 | 693 |
15.4%
|
|
| 2014 | 922 |
20.5%
|
|
| 2015 | 2015 or later | 1281 |
28.5%
|
| Sysmiss | 286 |