| Father’s status | Son’s status | Total | ||||
| (1) | (2) | (3) | (4) | (5) | ||
| (1) | 68 | 48 | 36 | 23 | 1 | 176 |
| (2) | 33 | 191 | 102 | 33 | 3 | 362 |
| (3) | 25 | 147 | 229 | 34 | 2 | 437 |
| (4) | 48 | 119 | 146 | 129 | 5 | 447 |
| (5) | 40 | 126 | 192 | 82 | 88 | 528 |
| Total | 214 | 631 | 705 | 301 | 99 | 1950 |