This proportion is lower than most studies that are subject to the data limitations pointed out by Park (2008). As the parameter a increases, the GE measures become less sensitive to inequality at the lower end of the distribution and more sensitive at the upper end. The cases of special interest are a values of 0,1 and 2. When a =0 it corresponds to the mean log deviation, a = 1 corresponds to the Theil index of inequality and a = 2 corresponds to one half the squared coefficient of variation.