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GDP in Senegal (2015) (48.1 billion USD p/a) is 20 x GDP in Saint Lucia (2015) (2.388 billion USD p/a)
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Total value of all gold ever mined ($7.5trillion)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.