This publication was developed by the Policy Analysis and Innovation Section of OCHA’s Policy Development and Studies Branch. Managing Editor: Lilian Barajas Researchers: Brittany Card, Paulina Odame Design and layout: Broadley Design Photo credits: OCHA, UNHCR OCHA wishes to thank data-source organizations and acknowledge the contributions of staff and partners in preparing and reviewing this document. For more information, please contact: Policy Development and Studies Branch (PDSB) United Nations Office for the Coordination of Humanitarian Affairs (OCHA) E-mail: ochapolicy@un.org Š2016 United Nations ISBN: 978-92-1-132043-5 eISBN: 978-92-1-057675-8