Working Group (1962) : The Planning Commission constituted a Working Group in 1962 to find out a desirable minimum level of living for the population. The Working Group recommended that the national minimum consumption expenditure for a household of five persons (four adult consumption units) should be not less than Rs100 per month or Rs20 per capita per month in terms of 1960-61 prices. For urban areas, this figure was Rs125 per month or Rs25 per capita per month to cover the higher prices there.