The given line graph illustrates the rate of participation in music concerts from varied age groups in a city from 2010 to 2015.
Overall, upward trends can be seen in the age groups of 16-24, 25-44, 45-54 and 75+, while the opposite was true for the group whose age ranged from 55 to 64 years old.
The age group of 45-54 was initially the most common, with over half of the population attending music concerts. Thereafter, this group witnessed a quick drop in its participation, falling to a nadir of 40% in 2011 before bouncing back to the initial level in 2012. In the last three years, the figure increased marginally, making this group fall from first to second place. Despite commencing at 40%, the figure of the age group of 16-24 showed rapid rise, surpassing that of those who aged from 45-54 in the middle of the year 2010 to become the age group that has its people engaged mostly in music concerts.
The trajectory observed in the 25-44 age group follows a contrasting pattern compared in the trend of the group 55-64 years old. In 2010, the group 25-44 shared a joint figure with the 16-24 bracket, followed by a continuous decrease to its lowest level at 30% in 2012 and a subsequent surge to 48% at the end. As for the age group of 55-64, the figure experienced the least change, reaching its peak of 30% from a starting point at 25%, before ending its period at thoroughly the same with the initial level.
While the group of those who aged above 75 years old attending music concerts remained the smallest, it also witnessed the most pronounced change throughout the period. Starting with the lowest figure of 10%, the proportion went up dramatically to the highest point of 21% in the following year and continuously declined back to the first level in 2013. The last two years saw a growth to 20%, representing a twofold increase from the first given year, which is the most pronounced change of the whole period.