ZURICH, Dec 5 Reuters The wealth held by the world39;s billionaires jumped by about 17 over the past year, as significant gains among the super rich in the United States more than offset a decline in China, Swiss bank UBS said on Thursday.

The UBS Billionaire Ambitions Report for 2024 said the total number of billionaires had risen to 2,682 from 2,544 a year earlier, and their worth to 14 trillion from 12 trillion. In 2015, their total wealth stood at 6.3 trillion.

According to the World Bank, the globe39;s population was just over 8 billion last year, and its gross domestic product GDP about 105.4 trillion, underlining just how much wealth is concentrated in a tiny sliver of humanity.

Most of the year39;s new billionaires were selfmade. The bank39;s report for 2023 had shown new billionaires acquiring more wealth through inheritance than entrepreneurship.

The latest report, based on a survey of billionaires conducted between June and September and wealth data on the super rich, showed the risk of geopolitical conflict and inflation were their main worries.

The survey also showed that North America was overwhelmingly seen as offering the best investment returns over the next year.

In the United States, the number of billionaires jumped to 835 from 751, led by industrial and tech magnates, with their total wealth climbing to 5.8 trillion from 4.6 trillion.

In mainland China the number of billionaires dropped to 427 from 520, and their wealth to 1.4 trillion from 1.8…