First Author:   Md. Israt Rayhan Institute of Statistical Research and Training (ISRT) israt@isrt.ac.bd   Assistant Professor, ISRT, University of Dhaka Dhaka, 1000, Bangladesh   880-1924752885(Phone) 880-1924752885(Fax) www.isrt.ac.bd Second Author: Ulrike Grote Institute for Environmental Economics and World Trade grote@iuw.uni-hannover.de