The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out The changes in income over the past 40 years have finally been sorted out