Statistics 198 Economic conditions 189 History 115 Social conditions 113 Population 106 Women 68 Mortality 61 更多 ... Economic history 58 Womyn 57 Education 55 Finance 48 Economic aspects 42 Statistical methods 41 Economic indicators 34 Elections 32 Social sciences 32 Agriculture 31 Employment 30 Government policy 30 Commerce 27 Politics and government 27 Banks and banking 26 Labor supply 26 Research 26 statistics & numerical data 26 Evaluation 25 Emigration and immigration 24 Finance, Public 23 Children 22 Social indicators 21 少 ...