The pie charts compare the shares of five different books sold by a bookseller between 1972 and 2012.
Overall, it is clear that the vast proportion of adult fiction was sold by one bookseller while that of other kinds of books showed a reverse trend. Interestingly, the sales of travel books constituted a negligible figure in all years.
Upon a detailed look, in 1972, other books were the solo dominant section among all categories, accounting for 25%. While Both adult and children’s fiction and biography demonstrated the same index (20%), the quite opposite is true for the figure of travel books, which showed a minimal proportion, 15%.
By 1992, the sales of books had undergone several alterations. Although the biography and other books show a marginal decline (5%) in their proportion, the shares of fiction books for both adult and children were the opposite, which saw a minor growth with hovering around the mid-20%. Also, the index for the travel books experienced a threefold change from 15% to 18%.
Coming to the year of 2012, there was a sharp increase in the figures for the adult fiction, reached at 45% and also, children’s fiction recorded a marginal growth (5%). Ultimately, the index of biography, travel and other books dropped by 8%.