First Author:   Olaolu R Olayeni Department of Economics, Obafemi Awolowo University, Ile-Ife, Nigeria rolayeni@oauife.edu.ng   Department of Economics,, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria   234(0)8059856698(Phone) 234(0)8059856698(Fax)