Have a look at the date of your article: 21/09/2010, written before the middle east revolution/war, before the nuclear accident, and before the terrible fuel inflation we are experiencing right now. Look at the date of my article just above: 31/03/2011. The date at which most of the administration/organization cut global economic forecasts due to the fuel crisis.
Anyway I have read much more optimistic articles begining 2008, just before one of the worst recession in the aviation field.
It has been almost half a century that aviation regularly comes back backward every 7/8 years, and we still dare to forecast for the next 20 years with a steady growth that we have during the best short period of times... It's pathetic.
Expired numbers for the next 20 years coming initially right from the aviation training/manufacture industry via a crystal ball.