Apple shipped an estimated 322m devices in 2017

"It's easy to think of Apple as just an iPhone maker. More than 210M iPhones are sold per year, and no other Apple product comes close to surpassing iPhone in terms of unit sales. However, iPhone is only one piece of Apple's hardware story.
According to my estimates, Apple sold 322M gadgets in FY2017. This total includes unit sales from every major product category and accessory powered by Apple software (iPhones, iPads, Macs, Apple Watches, AirPods, iPods, Apple Pencils, Beats headphones, and Apple TVs). After a down year in 2016, when Apple shipped 8% fewer devices than in 2015, the company returned to unit sales growth in 2017. In fact, Apple shipped 7% more devices in 2017 than in 2016."
Source:  Above Avalon, 20th December 2017