The pie charts illustrate the proportion of US music album revenues by five different genres – alternative, rock, R&B, country, and jazz – over a period of 3 years from 2008 to 2010.
Overall, it is evident that rock dominated the sales for music albums throughout the period, while jazz accounted for the smallest percentage of the total sales.
Looking at the growing categories, rock’s figure remained constant at 39% from 2008 to 2009 before witnessing a slight growth of 1% to 40% in the following year, which made up the highest proportion of the chart. Country, by contrast, underwent the most significant change, surging from 13% in 2008 to 18% in 2010, which was a 5% increase in revenue.
On the other hand, the percentage of R&B dipped moderately, starting from 22% in 2008 and finishing at 19% in 2010. Reported at 23% in 2008, the figure for alternative fell modestly to 20% in 2009 and 2010. Finally, jazz figure remained constant throughout the period at 3%, making this category the only one with this trend.