Percentile ratios provide a measure of household disposable income inequality at specific points of the income distribution and are a more intuitive way to gauge the width of the income distribution. The gap between the upper bound value of the I* decile and the upper bound value of the 9s' decile of households is close to 1:3 for the three countries with the most narrow household disposable income distribution and above 1:6 for the three countries with the widest. Also the cross-country differences in the share of top income earners (top percentile) in total household disposable income are very wide, ranging from 4.5 for Sweden to 18.1 for the United States. The OECD-21 includes countries for which data are available for the mid-1990s.