44 On the other hand, according to Otake (2005), Gini coefficients specially aggregated from Comprehensive Survey of Living Condition of the People on Health and Welfare showed the result that the speed of the widening inequality of consumption expenditure outpaced the speed of the widening income disparity. At the same time, however, it was pointed out as well that regarding the data of consumption expenditure in Comprehensive Survey of Living Condition of the People on Health and Welfare, as the a method to directly plot the amount of overall consumption expenditure is used, it is relatively easy for errors to be included.