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Facebook-owned social image sharing startup Instagram now has 400 million monthly active users.

Instagram announced the milestone with a blog post Tuesday, which also revealed that the service’s users share more than 80 million photos every single day. More than 75 percent of Instagram’s user base reside outside of the U.S., according to the company.

Instagram announced reaching 300 million monthly active users nine months ago. Back in 2012, when Facebook spent $1 billion to acquire Instagram, it had just around 30 million users.

The growth milestone comes as Facebook is looking to make more money with ads on Instagram. Earlier this month, Instagram introduced 30-second video ads.