The given pie charts compare the proportion of different kinds of courses, following by students in the years of 1984, 1994, and 2004.
Overall, it can be seen that although face to face courses witnessed a downward trend, they still held the lion’s share throughout, while correspondence courses remained stable in the first 10 years, which was overtaken by mixed media courses by the end. Besides, online courses have been introduced since 1994, holding the smallest share.
In terms of the percentage of courses in 1984, face to face courses, having peaked at 67%, was over three times higher than that of correspondence courses. Conversely, the data on mixed media courses stood at 13%, before increasing slightly to 15% after 10 years. In 1994, online courses were added and accounted for 11%, remaining the least prevalent. The decrease in face to face engagement was over half (54%), while correspondence courses stayed unchanged at 20%, ranking second.
In 2004,despite continuously experiencing a noticeable decline, face to face courses still ranked first at 40%, while online courses made up the smallest share, which was a quarter of face to face courses. The figure for mixed media courses rose dramatically to 35%, surpassing correspondence courses with 15%.
