| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1807- | 3544 |
19.9%
|
| 1 | 1979- | 3263 |
18.3%
|
| 2 | 1990- | 3301 |
18.5%
|
| 3 | 1998- | 3764 |
21.1%
|
| 4 | 2003- | 3940 |
22.1%
|
| 5 | 2009- | 0 |
0%
|
| Sysmiss | 78935 |