But this population bulge eventually moves into older age and, if fertility rates
remain low, the proportion of older people in the population increases. This trend
is accelerated by increasing survival in older ages. In more developed countries,
child and maternal mortality rates have plateaued at very low rates and their future
ageing will be increasingly driven by longer survival at older ages. This will lead to
greater proportions of people aged more than 80 years in the population.