The graph illustrates how the proportion of residents with various age brackets in an unspecified city who went to music concerts varied across half a decade from 2010 to 2015.
Overall, this period recorded increasing trajectories in three age groups, namely people aged 25-44, 45-54, and over 75, but to varying extents, in contrast to that in 55-64 group, while individuals who were about 16-24 witnessed a stability. Another striking feature is that in 2010, music concerts mainly attracted teenagers, but it is the 25-44 group that overtook and became the most prevalent.
Regarding demographics with largest shares, half of youngest people attended music concerts, compared to adults aged 25-44, with exactly 40%. Over the course of five years, the former figure fell sharply to 40% in the next year, before making a recovery to 50% in 2012 and remaining relatively stable until the end, while the latter experienced a substantial rise to 56% in 2011, with a subsequent steady growth to roughly 61% in 2014, and a final significant increase to a high of 70%, widening the gap with 16-24 group.
Also in the first year, the percentage of citizens aged 45-54 were four times as much as that of who were over 75 years old, with 40% and 10% respectively. Both these numbers saw increasing trends in the latter half of the period since 2013 to a high of approximately 48% an 20% in turn, despite hitting the nadir of 30% and 12% in the first half. Lastly, the 55-64 group rose slightly to just under 30% in 2011, after which it remained unchanged until 2013, followed by a gradual fall to 20% in the final year.