Sony CEO Kaz Hirai. (GeekWire Photo / Todd Bishop)

Sony has sold 53.4 million PlayStation 4 consoles worldwide in a little more than three years.

Sony CEO Kaz Hirai said at the Consumer Electronics Show in Las Vegas Wednesday the latest figures include 6.2 million units sold over the holiday season. That is about 500,000 more than last holiday season.

At CES last year, Hirai said PS4 lifetime sales were at 35.9 million, so that means consumers bought about 17.5 million PS4s in 2016. The company sold 17.4 million PS4 consoles a year ago, and in 2014, another 18.5 million devices sold.

Sony has outpaced Microsoft for current generation worldwide console sales since the PS4 and Xbox One debuted in November 2013. But we’re not sure exactly what the discrepancy looks like as Microsoft no longer breaks out its Xbox sales numbers.

While PS4 is now in its fourth year, several releases in 2016 kept the product fresh. In September, Sony announced a pair of new PS4 models — one that is slimmed down and another that is more powerful and designed for 4K and HDR TVs. A month later, Sony released its PlayStation VR system.

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