90 / 90 / 90! Really?

Happy to hear this. While the numbers don't scare me into paying for over-priced training, these losses help keep my SB firm buoyant and allow them to offer me nice T&C. Everything has to be paid for by somebody - better them than me. Sorry chaps.
 
I always wonder where that number originates from. Is there a proper statistical study done by someone somewhere that can be cited when claiming something like this?
 
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