a four fold increase over 1990

A New Member

Senior Member
Persian-Iran
Hello

What does 'over 1990' mean here:

Global gross capital flows in 2000 amounted to $ 7.5 trillion, a four fold increase over 1990.

Does it mean that the increase in caplital flows became fourfold in comparison to that of 2000 or what?

Thank you!
 
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