17.7 million PDAs shipped in 2006

There were big winners and big losers as the overall PDA market grew 18.4 percent in 2006. Among the winners was RIM, which saw sales of the Blackberry grow by a respectable margin. Among the losers--Palm, whose devices dropped dramatically in sales. All PDAs put together were no match for mobile phone handset sales, which totaled over a billion units last year. Sales of both types of devices were driven by factors that include a growing demand for wireless email and Internet access.

For more market numbers:
-  read the entire article at CIO Today