Apple gets 75% of all Google search revenues on iOS devices

Update - Techcrunch have removed this stat from their story - so it may not be accurate.  Caveat emptor
"Apple and Google are enemies and partners at the same time due to asymmetric competition. According to a report from Morgan Stanley, Google could pay more than $1 billion in 2014 to remain the default search engine on iOS. In 2009, Google paid only $82 million for the privilege. Analyst Scott Devitt believes that it is a per-device deal growing every year.
For every dollar of revenue Google makes on iOS thanks to advertising and data collection, Apple gets 75 cents from Google. The number is only going to increase in the coming years if iOS sales keep growing.
To put it into perspective, the Mozilla Foundation should get $400 million in 2014. Google remains the main contributor to the organization as one can read in Mozilla’s reports. Opera is another longtanding partner, but Morgan Stanley doesn’t give figures for this deal."

Source:  Techcrunch, 12th February 2013