Statistics 188 Economic conditions 63 Mathematical models 51 Periodicals 37 Population 31 History 30 Statistics, Vital 29 more ... Economic aspects 27 Women 27 Commerce 26 Social conditions 24 Econometric models 19 Social aspects 19 Housing 17 Labor supply 16 Taxation 16 Energy consumption 14 Fertility, Human 14 Industries 14 Mortality 14 Consumption (Economics) 13 Prices 13 Accounting 12 Banks and banking 12 Economic policy 12 Migration, Internal 12 Currency question 11 Petroleum industry and trade 11 Alcoholism 10 Corrections 10 less ...