Who is the richest royal family as of 2011?

Arabic monarchs aside ( are you Shah?= Sultanly!_) I would guess Queen Beatrix of the Netherlands- with the Philips Group in her back pocket- as it were. this includes Transportation: KLM, Holland-America Line, Electronics- the Philips Line proper- always ahead in the electronics field- cassettes- later compact discs, etc)- and Royal Dutch Shell- all under Royal Dutch patronage. Trixie has the Philips Line in her back pocket!