Quoting a report by Deutsche Bank, Arab News reported that the bank expected that mortgage financing, particularly in Saudi Arabia, could provide $100 billion in assets to the overall industry.
http://ummid.com/news/2011/November/20.11.2011/islamic_banking_by_2016.htm
http://ummid.com/news/2011/November/20.11.2011/islamic_banking_by_2016.htm