The pie charts illustrate the proportions of different types of courses chosen by students in 1984, 1994 and 2004, at ten-year intervals.
Looking at the illustration, it is immediately evident that face-to-face courses recorded the highest figure in all three years, whereas online courses accounted for the smallest proportion in the first year. Additionally, face-to-face courses showed an overall downward trend, while multimedia courses experienced a significant increase. Meanwhile, the figures for correspondence and online courses changed only slightly over the period.
In 1984, face-to-face courses dominated the chart at 67%, which was more than three times higher than the figure for correspondence courses, at 20%. Multimedia courses ranked third at 13%, while online courses accounted for no students. In 1994, face-to-face courses still topped the list, accounting for 54%, followed by correspondence courses at 20%. Multimedia courses stood at the third position with 15%, which was slightly higher than the figure in 1984. Online courses, meanwhile, made up 11% of the total.
In 2004, despite some fluctuations, face-to-face courses still boasted the largest proportion, at 40%. The figure for correspondence courses declined slightly to 15%. Meanwhile, multimedia courses experienced a substantial growth to 35%, becoming almost as popular as face-to-face courses. Online courses, in contrast, decreased slightly from 11% to 10%. Overall, the gap between face-to-face and multimedia courses narrowed considerably over the period.