| Census year | Wife’s education level | Husband’s education level | |
| Low | High | ||
| Urban | |||
| 1990 | Low | 86.10% | 9.20% |
| High | 1.80% | 3.00% | |
| 2000 | Low | 69.70% | 13.00% |
| High | 4.20% | 13.10% | |
| 2005 | Low | 61.10% | 12.20% |
| High | 5.60% | 21.00% | |
| Rural | |||
| 1990 | Low | 86.42% | 9.18% |
| High | 2.52% | 1.87% | |
| 2000 | Low | 85.51% | 9.84% |
| High | 2.66% | 2.00% | |
| 2005 | Low | 90.04% | 6.81% |
| High | 1.78% | 1.37% | |