Select "Commodity price long term trends" for international prices for 91 commodities, monthly 1960 - 2012, from the United Nations Conference on Trade & Development
Multiple international datasets from the OECD, covering all topics: agriculture, health, economics, patents, R&D, migration, telecommunication, etc., plus all energy industry data from the IEA.
(will ask for your email address first) a uniform web interface to current and historical datasets in finance, economics and banking, from multiple sources. Some of those are: Standard & Poor’s Compustat, the Center for Research in Security Prices (CRSP,) Mergent, Dow Jones, the Federal Reserve, and the Chicago Board of Options Exchange.
Interdisciplinary datasets with mapping, graphing, and report-generating capability. Includes tons of datasets for business, industry, labor, energy, population, income, health, politics, and more.
816,000 economic data time series from 107 national, international, public, and private sources, along with tools for interaction, display, and dissemination.
US production, consumption, investment, exports/imports, income and saving, industry input-output accounts, foreign direct investment and balance of payments, etc.
will help you find quarterly/monthly historical data for 45-912: Business Forecasting