In every region outside of North America (US and Canada), Moodle has largest market share by far, and it is second place in North America.
But the trajectory of Moodle new implementations (higher education degree-granting institutions moving from another LMS to Moodle as the primary LMS) is striking
Remembering that 2017 is partial-year data, this view still shows that Moodle's selection as a new LMS has virtually ceased in the US and Canada after peaking in 2010.