monde (1) tendance (1) accroissement de la population (1) papier (1) santé (1) effet (1) éducation (1) science économique (1) croissance économique (1) Education (1) Specifications (1) Specifications (1) Rates (1) Specifications (1) Population (1) Paper (1) Investments (1) Human capital (1) Health (1) Fertility (1) Emigration and immigration (1) Education (1) Economics (1) Economic development (1) Developed countries (1) Rates (1) Health (1) Migration (1) Fertility (1)