A sensitivity analysis on the impact of only fiscal variables is also employed. Other variables are tgs = taxes on goods and services as a percentage of revenue, cid = custom and other import duties as a percentage of tax revenues, tit = taxes on international trade as a percentage of revenue, and tip = taxes on incomes, profits and capital gains as a percentage of revenue, p. and a. are parameter estimates, and p and Cl are error terms. Other variables are from the World Development Indicators from the World Bank database, except those complemented by the United Nations Children’s Fund (UNICEF) database on health-related variables.