No wonder if Jeff Bezos has plenty to smile about.

The Amazon boss has topped Forbes' annual ranking of billionaires for a fourth straight year.

He edges out Tesla chief Elon Musk, who briefly looked like taking the title.

Overall the list features a record 2,755 people.

And Forbes' Chief Content Officer Randall Lane says they've had a good year.

"The very, very rich, got very, very richer."

The magazine estimates the billionaires on its list are worth a total $13.1 trillion.

That's way up from last year's mere $8 trillion.

Rounding out the top five are LVMH boss Bernard Arnault...

Microsoft founder Bill Gates....

And Facebook chief Mark Zuckerberg.

Investor Warren Buffett falls out of the top five for the first time in over two decades, muscled out by the tech titans.

This year's chart also has a startling number of new entries:

"And we have 493 new billionaires, that's one new billionaire every 17 hours."

Lane says that's evidence the list is getting more democratic, with more people getting their big break.

Among the newly minted billionaires is Whitney Wolfe Herd.

She's chief executive of dating app Bumble, which went public earlier in the year.