The three given pie charts compare the popularity of five different kinds of books according to the sales of a bookseller during the period from 1972 to 2012. It can be seen that the sale of fiction (adult and children’s) escalated, whereas the sale of other categories of books decreased over the period.
In 1972, there was an equal sale of adult fiction, children’s fiction and biographies, which constituted 20% each. Travel books had the least sale of 15%, whereas all other books had the maximum sale of 25%.
In 1992, a quarter of the sales were of adult fiction, which was a rise of 5% from the figures on 1972. The sale of children’s fiction and travel grew by 2% and 3% respectively, whereas that of biography and other books dropped by 5% each.
The sale of adult fiction almost doubled after another two decades (2012), and reached 45%. Children’s fiction had slightly more retail (25%) than that in 1992. Together, adult and children’s fiction, dominated the market with a sale of just under three quarters. The sale of all other categories fell markedly and together made up for just over a quarter of the sales.
Overall, fiction gained popularity, while biographies, travel books and other miscellaneous books lost their public appeal over the given period of four decades.