The pie charts compare information about the percentage of students who studied different courses from 1984 to 2004.
Overall, face-to-face courses were more popular than other courses among students in all the years shown. Notably, the percentage of students attending online courses was significantly lower even though this type of course was added in 1994.
Turning to the specifics, the proportion of students studying face-to-face courses was two-thirds, accounting for 67%, the most dominant figure in the diagram. There was also a slight disparity in statistics for mixed media and correspondence courses, with the latter being 7% higher than that of the former, at 20% and 13%, respectively.
After ten years, a new type of course, which was online, appeared, involving only 11% of students. The proportion of students attending face-to-face courses saw a slight decrease, accounting for 54%, still keeping its popularity. By contrast, the figure for mixed media courses increased to 15%, which was still 5% lower than correspondence.
In the final year, although dramatic growth was observed in the percentage of students attending mixed-media courses, overtaking that of correspondence, at 35% and 15%, respectively, the figure for face-to-face courses did not lose its popularity despite a 14% decline. The online courses were still the lowest figures where only 10% of total students used to study such courses.