This can be achieved within an Enrolment Statistics report (select Reporting>Reporting Module)
Here you will be able to select the dates that you wish to report on along with all countries or you can report on just particular countries. You can add further fields for example if you were wanting to see student forename and surname.
There is a helpsheet (no.HS068) which covers this. Please click on the following link to view or download helpsheet – HS068 Statistics – Enrolment – Student Numbers by Country.docx or please watch the video below demonstrating this process.