The Computer and Communications Industry Association has released a study that estimates that copyright limitations, such as fair use, generate over $4.5 trillion per year in the US. The report will be available on the CCIA website.
Here's an excerpt from the press release:
According to the study commissioned by the Computer and Communications Industry Association (CCIA) and conducted in accordance with a World Intellectual Property Organization methodology, companies benefiting from limitations on copyright-holders' exclusive rights, such as "fair use"—generate substantial revenue, employ millions of workers, and, in 2006, represented one-sixth of total U.S. GDP.
The exhaustive report, released today at a briefing on Capitol Hill, quantifies for the first time ever the critical contributions of fair use to the U.S. economy. The timing proves particularly important as the debates over copyright law in the digital age move increasingly to center stage on Capitol Hill. As the report summarizes, in the past twenty years as digital technology has increased, so too has the importance of fair use. With more than $4.5 trillion in revenue generated by fair use dependent industries in 2006, a 31% increase since 2002, fair use industries are directly responsible for more than 18% of U.S. economic growth and nearly 11 million American jobs. In fact, nearly one out of every eight American jobs is in an industry that benefits from current limitations on copyright.
Postscript: The report is now available.