| قيمة | فئة | حالات | |
|---|---|---|---|
| 1 | قبل عام 1950 | 20 |
9.3%
|
| 2 | (1950 -1959) | 34 |
15.8%
|
| 3 | (1960 - 1969) | 57 |
26.5%
|
| 4 | (1970 - 1979) | 104 |
48.4%
|
| 5 | (1980 - 1989) | 0 |
0%
|
| 6 | (1990 - 1999) | 0 |
0%
|
| 7 | بعد 2000 | 0 |
0%
|