Apple paid more than £20bn to app developers in 2016

"Apple customers’ App Store spending jumped 40 per cent in 2016 — fuelled by games such as Pokémon Go and Super Mario Run — to provide a much-needed boost to services revenues, at a time when iPhone growth remains sluggish.
Payments to app developers, after Apple took its cut, rose to more than $20bn last year, the company said on Thursday, with growth accelerating in China.
“2016 was a record-shattering year for the App Store,” said Phil Schiller, Apple’s senior vice-president of worldwide marketing."
Source:  FT, 5th January 2016