Iran has experienced one of the most rapid falls in fertility ever recorded. The observed pattern is one in which fertility has fallen simultaneously in all age groups, in all geographic settings and in all social groups, hence accounting for the rapidity of the decline at the national level....

From the demographic perspective, the 21st century is the population ageing century. Population ageing is well underway in all Asian countries as a result of the spectacular falls in both fertility and mortality rates in the second half of the 20th century.

From the demographic perspective, the 21st century is the population ageing century. Population ageing is well underway in all Asian countries as a result of the spectacular falls in both fertility and mortality rates in the second half of the 20th century.