The given line chart illustrates the proportion of students from 18 to 25 years old in universities in four distinctive nations between 1961 and 2011.
Overall, the number of 18- to 25-year-olds in universities in Singapore, Malaysia, Philippines and Thailand witnessed the upward trend though there were differences among them during the period of 50 years.
To be more specific, in 1961, the percentage of 18- to 25-year-old students in Thailand was the highest, with 25%, eightfold higher than that of Malaysia and moderately bigger than Singapore. This figure then decreased slightly by 5% after 30 years before rising and reaching the highest point of 43% over the last 20 years of the period. Besides, in 1961, the quantity of students aged 18 to 25 in Singapore started at 15%. After went up by 20% 30 years later, this number increased gradually to 40% in 2011.
Additionally, the proportion of students between 18 and 25 years old in Malaysia and Philippines both saw a considerable growth to 15% in 1991, from the initial figure of 3% and 8% in 1961, respectively. Then the figure for Malaysia grew by 5%, while the figure for Philipines remained relatively stale throughout the 20-year period.