Billionaires boosted their wealth by $2tn in a year

The financial achievements of the world's billionaires over the past year are striking. By the end of the year, their combined net worth had grown by an impressive $2tn, three times the result of the previous reporting period.

The average daily increase in the wealth of the planet's richest people stood at $5.7bn, highlighting the growing trend of capital concentration in the hands of the elite.