Specifically, numbers.

Apple is well known for dropping statistics and sales figures like bombshells, hoping to both wow and draw applause from its developer base and the media, alike.

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Here’s a quick rundown of what CEO Tim Cook and company touted during the opening keynote session on Monday, highlighting some of Apple’s recent developments and successes.

• 4: The number of platforms Apple has consolidated around and showcased on Monday: watchOS, tvOS, iOS, and macOS (previously known as OS X)
• 9: The age of the youngest attendee at WWDC this year
• 70: The percentage of attendees attending for the first time
• 74: The number of countries represented at WWDC 2016
• 350: The number of registration scholarships awarded to WWDC attendees
• 500: Number of apps with which the App Store launched eight years ago
• 100: The estimated number of attendees who are under 18 years old
• 1,300: The number of channels now accessible via tvOS, Apple’s operating system designed specifically for TV
• 2,000: The number of publications participating on Apple’s mobile news app, Apple News
• 5,000: The number of registered attendees at this year’s show, which is sold out.
• 100,000: The number of apps written in Swift, Apple’s programming language introduced in 2014
• 2 million: The number of developers Apple added in the last year alone; also the number of apps now in the App Store
• 13 million: The number of people registered in Apple’s developer community
• 15 million: The number of users on Apple’s music streaming service, Apple Music
• 60 million: The number of users using the Apple News app
• 130 million: The number of times those two million apps have been downloaded from Apple’s App Store
• 50 billion: The amount of money in U.S. Dollars that Apple said it has paid directly to developers over the years