The age structure of the people has been changed due to the fall of TFR and the rise of average age. According to population census of 2011, about two third of the population is between 15 and 60 years of old. In perspective of the retirement age of the government and private services, people aged up to 60 years are considered able to work. Around 27 per cent of the population is under 15 and eight per cent is over 60 years. Only one third of the population is dependants.