Income distribution Economic conditions 21 Economic policy 21 Poor 14 Mathematical models 13 Wealth 12 Congresses 11 Taxation 11 Labor supply 10 Economic aspects 9 Economic development 8 Income 8 Public welfare 7 Wages 6 Case studies 5 Cost and standard of living 5 Econometric models 5 Economics 5 Poverty 5 Social conditions 5 Appropriations and expenditures 4 Equality 4 Social policy 4 Social security 4 Education 3 Finance 3 Government policy 3 Government spending policy 3 History 3 Investments, Foreign 3