The given charts compare the number of students that attended four types of courses every 10 years from 1984 to 2004. Overall, the percentages of face-to-face and correspondence courses decreased throughout the researching period, while those of mixed-media courses rose overtime.
Looking at the dominant categories, the number of people that attended face-to-face courses took up 67% of the pie chart, and those of correspondence programs accounted for 20%. 20 years later, the quantity of students who took face-to-face programs dropped to 40%, but still sat at the first place. Meanwhile, those of correspondence courses declined slightly to 15%, but were placed third among the four brackets.
Regarding the ones that were gaining fame, mixed-media courses attenders accounted for 13% of the chart in 1984, gained 2% in 1994. Then, it rose greatly to 35% 10 years later, putting it in second place. Online courses were established after 1984, and in 1994 it possessed 11% of the total number of students. Afterwards, it stayed relatively the same until the end of the research period.
