The graph below shows the percentage of people in different age groups in one city who attended music concert between 2010 and 2015

Given is the line graph contrasting the percentage of people who went to the music concert over a 5-year period, commencing from 2010 to 2015.
Perceptibly, the proportion of people who attended the concert music in three age groups namely 16 to 24, 45 to 54 and 75+ escalated while the percentage fluctuated in 25 to 44 and 55 to 64.
Within the first 2 years, the percentage of the youngest group going to the music concert surpassed that of the middle-aged group, increasing considerably to about 70% in 2015 from only 40%. The figures for the 45-54 and 25-44 age groups ended at around 52% and 49%, respectively, in 2015.
Turning to the 2 remaining groups, the 55-64 age group’s attendance at the music concert deflated unremarkably from about 25% in 2010 to 22% in 2015, while the figure for the elderly who aged 75+ from 10% to just above 20%, despite a marginal diminution from 2011 to 2013.