rate of music sale between 2018 and 2011.

The line graph below has demonstrated the rate of music sales between 2011 and 2018 in London. As you can see from the data, there were three different selling methods measured by the line graph. Overall, the numbers changed a lot during these proud of time in both steam selling and CDs buying. However, the selling ratio by download had been slightly up and down during this time. Based on the information provided by the chart, we can see that the streaming method was unknown and very unpopular in 2011, and it was about %5 of the music sales market. However, at that time, most musicians prefer to publish their albums on CDs because most people would like to use this kind of method to listen to their favorite songs, so about %55 of the market sales were dedicated to this method. Also, downloading was around %35 and had gradually gone up and down between this time and with a reduce of percent in 2018 it reached %30 of the music sellings market.