it is based on information obtained from the statistics division and the population division of undesa as well as from the five united nations regional commissions the united nations conference on trade and development unctad the united nations world tourism organization unwto the international monetary fund imf the world bank the organization for economic cooperation and development oecd and national and private sources estimates for the most recent years were made by eapd in consultation with the regional commissions unctad unwto and participants in project link an international collaborative research group for econometric modelling coordinated jointly by eapd and the university of toronto forecasts for and are primarily based on the world economic forecasting model of eapd with support from project link historical data may differ from those in previous editions of wesp because of updating and changes in the availability of data for individual countries