First Author:   Mamadou Michel Diakhate Economic and Monetary Research Laboratory (LAREM)-UCAD mamadou.m.diakhate@gmail.com   PO BOX 47337 , Dakar-Liberté   +221778601314(Phone) +221778601314(Fax) https://www.larem-ucad.org/ Second Author: Seydi Ababacar Dieng Economic and Monetary Research Laboratory (LAREM)-UCAD sadieng@larem-ucad.org   Dakar-Liberté   +221778601314(Phone)   https://www.larem-ucad.org/