First Author:   Matheus O. de Alencar Ph.D. student in Applied Economics from Rio Grande do Sul Federal University (UFRGS). matheusalencar29@gmail.com   Fortaleza, Brazil       Second Author: Jair A. Araujo Professor in the Agricultural Economics Department of Ceará Federal University (UFC). jaraujoce@gmail.com   Fortaleza, Brazil       Third Author: Wellington R. Justo Professor in the Department of Economics of Cariri Regional University (URCA). justowr@yahoo.com.br   Recife, Brazil       Fourth Author: Celina Santos de Oliveira Ph.D. in Economics from Paraíba Federal University (UFPB). oli.celina@gmail.com