Which year did the "Internet, Multimedia Systems and Applications" conference publish the most papers?
'Internet, Multimedia Systems and Applications' is the FullName of paper; published the most papers refers to MAX(COUNT(year))
SELECT T2.Year FROM Conference AS T1 INNER JOIN Paper AS T2 ON T1.Id = T2.ConferenceId WHERE T1.FullName = 'Internet, Multimedia Systems and Applications' GROUP BY T2.Year ORDER BY COUNT(T2.Id) DESC LIMIT 1