List the subject ID, name of subject and the number of courses available for each subject in ascending order of the course counts.
SELECT T1.subject_id ,  T2.subject_name ,  COUNT(*) FROM Courses AS T1 JOIN Subjects AS T2 ON T1.subject_id  =  T2.subject_id GROUP BY T1.subject_id ORDER BY COUNT(*) ASC
subject ID refers to subject_id; name of subject refers to subject_name; number of courses available for each subject refers to COUNT(*); ascending order of course counts refers to ORDER BY COUNT(*) ASC;