When you just want some stats quickly, try some of these sources ...
Although 'market share' is not the same as production, inventory, or sales data, sometimes it will work as a good substitute. If you try the Market Share Reporters linked below, search on a product name, rather than a company or brand name (athletic shoes instead of Nike), and often you'll get useful data.
For the United States, the main source of industry data is the US Census Bureau, which produces a huge volume of data. It mostly uses the NAICS code to organize the data. (So if you're not sure what codes may apply to the industry you're researching, please click here.) Below are links to the websites for many of the publications from the Census Bureau.
If you need a longer run of data, data that show how well or poorly the industry has fared through time, try some of these databases.
More international organizations are offering their data and data platforms for free. Not all of course, but the more popular datasets.
The big names:
– UNCTAD (United Nations Conference on Trade & Development)
– World Bank
– IMF (International Monetary Fund)
– OECD (Organization for Economic and Commercial Development)
Some of them are classics, and you'll find them mentioned regularly. Online versions are now also available for some.