Knight Frank's new wealth report shows that about 70 people a day became uber-rich last year.
The total number of people worth at least $30 million rose by 4.2% to about 627,000 worldwide.
AdvertisementAlmost 70 people a day joined the ranks of the uber-wealthy last year, Knight Frank has revealed.
A net worth of at least $30 million is required to be classed as a UHNWI.
However, it only takes $5.8 million to rank in the top 1% of wealthy Americans, Knight Frank said.
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