Forecasts are developed using econometric models linked to macroeconomic data supplied by Oxford Economic Forecasting.  All models are based on a "State of Economic Development" model in which the relative size and wealth of a country and the rate of economic growth determine the rate of change in production or consumption spending. 

Market size is determined using an indirect measure of demand adjusted by more traditional estimates derived from apparent consumption (production, less exports, plus imports).  An input-output model is used to measure the indirect demand and the distribution of final demand for individual commodities or industries.  Differences between the implied demand from a standard I/O and the apparent consumption based on the actually reported trade and production data is used to adjust the I/O coefficients to reflect the countries actual pattern of consumption.  In this way market size for 300 plus commodities are derived.