The given graph compares the proportion of attending music concerts of 5 age groups in a particular city over a period of 5 years, starting from 2010. Overall, the percentage of people over 25 fluctuated, including a downturn for 55-64 age groups and the opposite trend for 25-44, 45-54 and 75+ years old; however, the 16-24 age group witnessed a stable trend after 10 years.
Looking first at 3 groups which had increasing figures. Starting off at 40% in 2010, the percentage of 25-44 individuals rose significantly by 20% in the next 10 years, recording the biggest gap out of 5 groups. Because of an increasing phenomenon, this group went from the second rank to the first position. Undergoing the similar pattern, the 45-54 age group recorded the same initial ratio of the previous group in 2010, then experienced an increase, approximately 49%, giving this the third rank. Furthermore, the elderly are not inclined to watch music concerts, but this percentage still rose overtime. To be specific, 10% was shown in the percentage of 75+ in the beginning of the period and this increased in 2015, 10% higher compared to 2010. Due to that upward trend, this group still had the lowest proportion.
Turning to the only group that had the declined percentage, the 55-64 age group ranked third in 2010, but it decreased by 5% in the end of the timeline and had the same ratio with the oldest age group, making them tied for the last position.
Also noteworthy is that the youngest group, from 16 to 24 years old had the stable trend, which ranked the first position at over 50%, but after 10 years, this figure did not change with the same percentage. Because of this unchanged phenomenon, the percentage of 16-24 groups was from the first to the second rank.