Yes, there is. It's just.... It's not one simple answer. The reason I'm pausing is simply because, depending on how valuable that log information is—for example, in fighting malware—we may keep it for x period of time. For web search history, it may be a different period of time. But it's certainly not a case of 10 years, and it's not a case of multiple years.
On October 30th, 2012. See this statement in context.