Income distribution

U.S. political analysts tend to believe that the tax policies of Republican administrations tend to favor the wealthy and those of Democratic administrations tend to favor the poor.

The Lorenz curves for income distribution in 1988 (Reagan's final year) and 2000 (Clinton's final year) are given below.

Find the Gini coefficient of income for each year and determine in which administration's final year the income distribution was more nearly equal.

Does this support the conventional wisdom regarding the tax policies of Republicans versus Democrats?

1988 : y= x^2.3521

2000 : y= x^2.4870