Income distribution 51 Income tax 27 Low-income housing 22 Income 16 Economic conditions 13 Dissertations 12 Dissertations, Academic 12 Taxation 12 Economic aspects 10 Econometric models 8 Public housing 8 Retirement income 7 Housing policy 6 Wages 6 Wealth 6 Zakat 6 Consumption (Economics) 5 Economic development 5 Economics 5 Government policy 5 Housing 5 Law and legislation 5 National income 5 Poverty 5 Education 4 Expenditures, Public 4 Farm income 4 Islam 4 Planning 4 Religious aspects 4