For the estimation of the regression analysis coefficients the data between years 1969 and 1999 was applied, since Regression results obtained using this set of years were closer to the concept of economic theory of Keynesian Consumption function.
Kwa hesabu ya uchambuzi wa kurudi nyuma coefficients data kati ya miaka 1969 na 1999 ilikuwa inatumika, tangu matokeo Regression kupatikana kwa kutumia hii seti ya miaka walikuwa karibu na dhana ya nadharia ya kiuchumi ya Keynesian Matumizi kazi.