| Year | |||
| 2011 | 2031 | ||
| Total (N˚) | 1,931,457 | 2,226,497 | |
| Gender | M | 41.7% | 42.0% |
| F | 58.3% | 58.0% | |
| Age Group (years) | 65 - 69 | 27.5% | 31.0% |
| 70 - 74 | 25.1% | 26.1% | |
| 75+ | 47.4% | 42.9% | |
| Level of Education | N.E./Primary | 86.5% | 59.7% |
| Lower Sec. | 5.4% | 15.1% | |
| Upper Sec. | 3.6% | 12.2% | |
| Higher | 4.6% | 13.04% | |