Please help me with my writing task 1

The line chart compares the proportion of people who went to music concerts from 2010 to 2015 in a particular city, split by age. Five age groups shown include teenagers (16-24), younger adults (25-44), middle-aged adults (45-54), older adults (55-64) and “over 75” group.

Overall, over the period shown, the percentage of people who attended the music concerts in older adults group slightly decreased, while for the four remaining groups, it rose. At the starting point, people in middle-aged adults group went to music concerts the most, although it was overtook by the percentage of people in teenagers group from 2011 to 2015. People in the ‘over 75’ group attended music concerts the least.

With regards to the proportion of people in teenagers group, it began at 40% and then climbed to 60% in 2012 before rising steadily to 70% in 2015. Likewise, the figure for middle-aged group decreased to hit a low of 40% in 2011, after which it increased to 50% and remained unchanged before reaching a high of just under 55%.

On the other hand, the percentage for young adults group dropped from 40% to 30% in 2012, and this was followed by an increase to just under 50% in 2015. The feature was opposite for the figure for older adults group as it decreased from around 25% to 30% before dropping to just above 20% in the last year. Only 10% of people who went to music concerts belonged to ‘over 75’ group in 2010, after which this figure peaked at 20% and then increased to 20% in 2015.