The given line graph illustrates the proportion of students aged from 18 to 25 in four different nations from 1961 to 2011.
Overall, it is clear that all four figures for university students aged from 18 to 25 years old in four nations witnessed an upward trend. It is noticeable that at the end of the period, Thailand became the nation that had the highest percentage of university students between the ages of 18 and 25.
In 1961, the percentage of 18- to 25-year-olds in universities in the Philippines stood at 7% before remaining unchanged for the next 10 years. Its figure started climbing from 7% in 1971 to almost one-fifth in 2011. Moving on to Malaysia, the year 1971 saw a 10% increase in the percentage of university students aged from 18 to 25 years old. The figure for students aged from 18 to 25 in universities in Malaysia went up steadily by 5% in 1991 before remaining unchanged in the next 20 years of the period.
In Singapore, the percentage of 18- to 25-year-olds in universities stood at 15% in 1961 before experiencing a fluctuating trend from 30% in 1971 to 35% in 1991. The figure for university students aged from 18 to 25 years old in Singapore fell slowly by 1% in 2001 before increasing by 6% in 2011. Next, in Thailand, the percentage of 18- to 25-year-olds in universities fell slowly from 25% in 1961 to 20% in 1991 before peaking at over 40% in 2011, making Thailand the nation with the highest rate in the percentage of university students aged from 18 to 25 years old.