These handy reports by IHS Global Inc. pull together stats and insights on various industry sectors on a quarterly basis--in some cases going back to 2002. Good for analyzing trends over time.
Milner owns thousands of books on various industries. To search for books, go to Milner's catalog, and set the dropdown arrow in the first search field to "Subject." Next, try formulating a likely subject phrase for your industry (e.g. "computer industry, etc.). If that does not produce the desired results, search the following Library of Congress site for the official term for your industry. Here are some samples of books on industries from Milner's catalog:
NAICS and SIC codes are numerical codes assigned by the U.S. government to business establishments to identify the primary business of the establishment. The classification systems were developed to facilitate the collection, presentation, and analysis of data; and to promote uniformity and comparability in the presentation of statistical data collected by various agencies of the federal government, state agencies, and private organizations. SIC codes are four digit numbers and were used by the federal government until 1997; some private publishers still use them. NAICS codes are six digits long and have been used by federal agencies starting in 1997.