The graph below shows how people buy music. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
The line graph illustrates the percentage of 3 various method buying music over 7-year from 2011 to 2018.
As is observed, the figure for buying by CDs was the most popular in 2011. But in 2018 it was taken over by Streams.
Looking at the details, as regards Downloads, the propotion began at 35%, then there was an slow increase to over 40% during the following 3 years prior to dropping slightly to 30% untill 2018. Then look at CDs purchased, the percentage of it started in the highest, at which point it at above 50% in 2011, nevertheless, it dived dramatically to under 30% in 2018.
In contrast, the ratio of Streams went in the opposite direction, standing at 5% in 2011. However, the year 2018 witnessed a significant rise to above 40%
The line graph illustrates the percentage of 3 various method buying music over 7-year from 2011 to 2018.
As  
is observed
, the figure for buying by CDs was the most popular in 2011.  
But
 in 2018 it  
was taken
 over by Streams.
Looking at the  
details
, as regards Downloads, the  
propotion
 began at 35%, then there was  
an
 slow increase to over 40% during the following 3 years prior to dropping  
slightly
 to 30%  
untill
 2018. Then look at CDs  
purchased
, the percentage of it  
started
 in the highest, at which point it at above 50% in 2011,  
nevertheless
, it dived  
dramatically
 to under 30% in 2018. 
In contrast
, the ratio of Streams went in the opposite direction, standing at 5% in 2011.  
However
, the year 2018 witnessed a significant rise to above 40%