The pie charts below show the percentage of five kinds of books sold by a bookseller between 1972 and 2012. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The given pie charts offer insights into how much of five different genres of books, namely adult fiction, children’s fiction, biography, travel and the others, accounted for the sales of a bookseller throughout a 40-year period. Overall, at the start of the period, five types of book contributed quite evenly to the number of books […]