That's as of 2007 (which is the most recent figure they had when this quiz was last updated). The number has since been updated to be higher, but at 3.9 million it's still only marginal as to whether it would sneak onto the list today, especially since other cities have also been growing in the meantime, and the threshold is probably quite a bit higher.
That's as of 2007 (which is the most recent figure they had when this quiz was last updated). The number has since been updated to be higher, but at 3.9 million it's still only marginal as to whether it would sneak onto the list today, especially since other cities have also been growing in the meantime, and the threshold is probably quite a bit higher.