Mamadou Michel Diakhate Economic and Monetary Reseach Laboratory (LAREM)-UCAD   PO BOX 47337 Dakar-Liberte,   mamadou.m.diakhate@gmail.com   https://www.larem-ucad.org           JEL Areas: C : Mathematical and Quantitative Methods E2 : Macroeconomics: Consumption, Saving, Production, Employment, and Investment: General (includes Measurement and Data)