Number of ultra-rich swells to almost 173,000

The world gained an extra 5,300 UHNWIs last year and, as with other people worth $30m or more, they like property and luxury items in a big way The world's super-rich continued their seemingly unstoppable rise last year with the number of people worth $30m (£19.7m) or more expanding to 172,850. Between them they control nearly $22tn in assets - more than the national output of the US and Germany combined. Almost 5,300 people joined the ranks of so-called ultra high-net-worth individuals (UHNWIs...