The working population (15 – 64 years) takes part in various occupations such as agriculture, forestry, manufacturing, construction, transport, services etc. Average production per head and average income per head both depend on this working population which raise the index of development. These are grouped into primary, secondary, tertiary, quarternary and the fifth pentanary activities of occupations.
These differ in different countries due to level of economic development. People engaged in activities of above mentioned occupations make a nation more prosperous in economic point of view. Developed economy with industries and infrastructure have more people engaged in secondary and tertiary activities. If it is a primitive economy, the ratio of working population in primary activities will be greater as these need more population for the utilisation of natural resources.
