The three pie charts illustrates the proportion of five different types of books sold by bookseller from 1972 to 2012.
It is true that many people afforded adult fiction in all years except 1972, whereas the shares for biography the lowest.
Bookseller sold different kinds of books that most popular of these are the adult fiction, children fiction and others. The percentage for adult fiction, which stood at 25% in 1992, after which there was a considerable decrease to one fifth in next decades, but this was fallowed by a dramatic rise to nearly half over the end of the period. By contrast, the figure for children fiction constitute around 22% in 1992 and it decreased marginally to one out of five in 1972, but then it increased one quarter in 2012.
Turning to the next three books, the shares for biography accounted for 16% in 1992, and there was a significant decrease to roughly 8% in 2012, after it went up a fifth in 1972. In contrast, travel was responsible for 18% in 1992 and it fell slightly to 15% from 1992 to 1972. Then it reduced to one tenth at the end of the period. By contrast, the percentage of other books make up 20% then increasing to 25% in 1972, but this was followed by a noticeable decrease to 12% in 2012.