The pie charts show the proportion of online music service use by age group in the US between 2013 and 2017.
Overall, it is clear that the share of online music service users from 10s to 20s (이런 식으로 자의적인 축약을 해서 쓰는 것은 좋지 않습니다. 그냥 people in their twenties 와 같이 적어주시거나, 아예 표의 표현을 그대로, 즉 those who were aged between 20-29 과 같이 적어주세요! 다른데에도 싹 수정해주시면 됩니다.) increased significantly during the four-year period. In contrast, the proportion of older users in online music went down considerably from 2013 to 2017.
Looking at the charts more closely, the proportion of 40s users in online music, representing 34 percent in 2013 plummeted to 14 percent by 2017 and the percentage of users above 50 years old (다른데에도 다 이렇게 적어주시면 됩니다.) shows similar pattern to aforementioned figure 40s' figure. On the other hand, teenager (엄밀히 따지면 10대를 티네이저라고 바꾸는 것도 안 되긴 한데, 그래도 앞의 10s 보단 낫습니다.) users' figure in online music, which was five percent in 2013, accounted for roughly one-forth in 2017. Moreover, the proportion of online music users from 20s, representing 18 percent in 2013, nearly doubled to 34 percent, which was the highest figure in 2017. Meanwhile, the share of 30s users went up by only two percent (이렇게 적으면 틀린 분석이 됩니다. 2% point, 2 percentage points 가 올바른 분석이고요.) in 2015 and then it declined sharply to 24 percent in the end of the period in question.
총평: (6/7/7/6) 6.5
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https://www.gohackers.com/?c=ielts/ielts_info2/ielts_story&type=url&uid=469234undefined