The pie charts detail the percentages of different courses taken by the students in 1984, 1994, and 2004.
Overall, it is clear that the figures for mixed media and online courses, the latter being unavailable in the initial year, rose to varying degrees, at the expense of face-to-face courses, which followed a downward trend, whereas correspondence courses remained relatively stable. Face-to-face courses remained the most popular course taken by students throughout the given period, while online courses accounted for the lowest percentage.
In 1984, 67% of students took face-to-face courses, the most popular course, followed by correspondence and mixed media courses, at 20% and 13%, respectively. By 2004, online courses had become available, accounting for 10% of the students, while face-to-face and correspondence courses declined notably to 40% and 15%, respectively. However, students taking mixed media courses increased significantly to 35%.
In the final year, the percentages of face-to-face, correspondence, and online courses increased to varying extents, at 54%, 20%, and 11%, respectively, while those of mixed media courses decreased to 20%.