Microsoft founder Bill Gates reclaimed his spot at the top of the list, adding $9 million to his fortune in the past year.
Tech tycoons continued to dominate the top 20, with Amazon founder Jeff Bezos and Google co-founders Larry Page and Sergey Brin appearing on the list. Others are familiar faces, but saw a substantial increase in wealth over the previous year.
You can see Forbes' complete billionaires list here; we're taking a closer look at the top 20.