The given line chart details the percentages of people attending concerts from 2010 to 2015 across various age groups. Looking from an overall perspective, it is readily apparent that all ages showed increasing trends except for 55-64 and that younger people tended to go to concerts more often.
52% of those between the ages of 45 and 54 went to concerts in 2010, leading all age brackets, but there was a dip to 40% in 2011 which allowed the 16-24 group to rise 15% to 55% and lead all concert-goers. From there, both groups increased with broadly similar trends as the 16-24 year olds had risen to 70% by 2015 and the former group had grown to 54%.
The 25-44 and 55-64 groups showed inverse trends with the former group dipping from 40% in 2010 to a low of 30% in 2013 before sloping upwards to nearly 50% by the end of the period. The latter group rose steadily from a starting point of 20% to intersect with the younger group at 30% in 2013 and then fell to just over 20% in 2015. The final group, aged 75+, doubled to 20% in the first year, had surrendered those gains by 2013, before undergoing a stable increase and reaching 20% to finish the period.