Growing inequality among the ultra-wealthy

There were 2,473 billionaires in the world, as of Wealth-X's last count through 2015

Sitting at a table, grinding his pinkie into the corner of his mouth and staring at the screen, Dr Evil announces he is holding the world ransom for $1 million. Having been cryogenically frozen for 30 years, the comic villain created by the actor Mike Myers is shocked when he is told that $1 million isn’t a lot of money in 1997.

Trying to regain his composure, he turns to the screen, voice cracking with uncertainty, and says, “OK then, we hold the world ransom for $100 billion.”

Twenty years after the movie Austin Powers: International Man of Mystery was released, billions