| Value | Category | Cases | |
|---|---|---|---|
| 1 | First Year | 1979 |
33%
|
| 2 | Second Year | 1328 |
22.2%
|
| 3 | Third Year | 1447 |
24.1%
|
| 4 | Fourth Year | 1238 |
20.7%
|
| Sysmiss | 52 |