Los Gatos, California - Viewer figures are normally a closely guarded secret for Netflix. But the streaming service has now revealed the company's biggest hits to date.

There's perhaps no surprise when it comes to the most-watched series: The historical series Bridgerton was one of the most talked-about shows of 2020.

Around 82 million Netflix profiles clicked on Bridgerton in the first 28 days after its release and watched it for at least 2 minutes – more than any other series on the streaming platform, Netflix boss Ted Sarandos told reporters at a recent conference in Los Angeles.

It was a rare insight into Netflix viewership figures, which are otherwise kept top secret.

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Bridgerton also came out on top in terms of the total time viewers spent with the series in the first 28 days after release. The other top-rated shows were Tiger King, Emily in Paris, and Stranger Things.

In terms of films: The Sandra Bullock thriller Bird Box and the Chris Hemsworth action blockbuster Extraction were the two biggest feature-length successes.

"We are trying to get to a place where we can be a lot more transparent both with our producers and with our customers," Sarandos said, noting that data had been "a big black box" so far.

Currently, the South Korean drama series Squid Game "is on the rise," Sarandos added, noting that the global popularity of this show took Netflix by surprise.