The line chart depicts the proportion of individuals in different age groups in one urban area attending music concerts from 2010 to 2015.
Overall, the percentage of 55-64 and 16-24 groups was decline over the period while the opposite was true for others. In addition, the group of 25-44 witnessed the most significant change.
Between 2010 and 2011, there was the most dramatical decrease of 16-24 groups, approximately 52% to 40%; whereas 55-64 groups increase to 30% and continued fluctuate around 30% up to 2013. In the following year, the figure for 16-24 group increase to 50% and experienced a fluctuation between 50% and 52% while this figure of 55-64 groups shrink from 30% to 20% hitting the bottom at the end of period.
In 2010, the percentage of 25-44 group was 40% 4 times higher than the olded group but both groups rose to around 55% and 20%. At this time, the figure for 45-54 group was decline from 40% to around 32% and continued fluctuate around 31% during the next 2 years; whereas the olded group witnessed the shrinking proportion to about 12% in 2012 and fluctuation around this point in the following 2 years before rising to 20% at the end. After 2012, 25-44 groups saw the significant increase and reach the peak at 70% in 2015. After 2013, 45-54 group also soared to around 47% at the end of process.