Apple released a mother lode of statistics on its iTunes and App Store last week at its Worldwide Developers Conference, giving analysts an unprecedented look at iTune's rapid expansion since its 2003 launch as a digital music service. Here, a partial break-down of the "astronomical" growth:
Number of iTunes account holders worldwide
Digital books downloaded
Apps downloaded for iPhones, iPads, and iPods
Population of Earth
Average number of app downloads for each of iTunes' 225 million account holders
Number of apps currently up for sale on iTunes
Apps developed specifically for the iPad
Amount it costs Apple to run the store, according to an analysis by Horace Dediu, a self-employed analyst and blogger for Asymco
Estimated cost of Apple's new data center in Maiden, N.C., which will help accommodate iTunes, along with the new iCloud service and MobileMe
Total estimated gross profit Apple has earned from iTunes since the service was launched
Sources: Asymco, SF Chronicle, PC, AppleInsider, Google
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