The line graph compares the total revenue of music sold through three different methods, including streams, downloads, and CDs purchased, between 2011 and 2018.
Overall, the proportion of music sales via downloads and CDs purchased witnessed an downward trend, whereas that of streams grew significantly. Additionally, despite emerging as the lowest at the beginning, the figure for streams surged consistently throughout the time-frame and became the highest percentage at the end.
Regarding the decreasing categories, CDs initially attracted the most audience, with the music sales through this method accounting for the largest share at nearly 55% in 2011. However, this figure then dropped consistently to around 25% after 7 years. Conversely, the rate of music sales by downloading experienced a slight growth from 30% to 42% from 2011 to 2014, after which it declined by approximately 21% by 2018.
Concerning the remaining methods, music sales through streams stood at about 5% at the start, being the lowest data compared to the others. However, it then exhibited a steady increase to approximately 41% after 7 years, surpassing that of downloads and CDs purchased to become the largest percentage.