The pie charts above compare information about how many students were involved in various types of courses in 1984, 1994 and 2004.
From an overall perspective, it can be seen that the main feature was face to face courses, whereas online courses were less popular than others.
Looking at the details, face to face classes stood just above 50%. In 1984, online courses did not exist, while face to face courses were the highest level of students exactly at 67 %. Moreover, the features in 1994 and 2004 were at the same level at 54%
In contrast, mixed media courses had a different rate throughout the period. In 1984, mixed media classes were just under 10%. However, these trends remained consistent at 15% in 1994 and 2004. Therefore, correspondence courses were at the same level in 1984, 1994 and 2004. The amount of students who involved in this course was only 20%.
