| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2009 or before | 65 |
16.3%
|
| 2 | 2010 to 2014 | 96 |
24.1%
|
| 3 | 2015 to 2019 | 237 |
59.5%
|
| Sysmiss | 92 |