| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1950- | 67 |
19.6%
|
| 1 | 1983- | 62 |
18.2%
|
| 2 | 1992- | 56 |
16.4%
|
| 3 | 1996- | 62 |
18.2%
|
| 4 | 2000- | 94 |
27.6%
|
| 5 | 2009- | 0 |
0%
|
| Sysmiss | 412 |