The model used for updating the Orlando visitor forecast incorporates historical and current market data and domestic visitor statistics from D.K. Shifflet & Associates. Tourism Economics forecast model is based on economic indicators from Florida, the United States and the global economy. The model used to generate the forecast includes factors such as gross domestic product, employment levels, inflation rates and currency exchange rates. Past and current travel forecasts do not take into consideration the effect of destination advertising on travel. Tourism Economics is an international economic research, analysis and forecasting company supporting over 100 destinations and companies. The company is a subsidiary of Oxford Economics, one of the world's leading providers of economic analysis, forecasts and consulting advice. D.K. Shifflet & Associates Ltd., a travel research firm, specializes in consumer-based travel data. DKS&A's DIRECTIONS® Travel Intelligence SystemSM collects detailed monthly travel data on more than 150,000 trips annual collected from a sample of U.S. households.