The pie charts compare the proportions of five categories of books sold by a bookseller a over 40-year period, commencing from 1972.
Overall, the percentage of adult fiction and children’s fiction increased substantially, while that of travel, biography, and the category labeled “others” decreased slightly over the given timeframe. Notably, the figure for adult fiction was the dominant category, except in 1972, when the figure was lower than that of the category labeled “others”.
In detail, the sales of adult fiction and children’s fiction saw moderate growth over the period. In 1972, the proportions of adult fiction and children’s fiction were equal at 20%. The figures for adult fiction and children’s fiction were the highest in 1992, with figures standing at 25% and 22%, respectively. Despite experiencing noticeable growth in 2012, the share of adult fiction remained considerably higher than that of children’s fiction, at 45% compared to 25%.
By contrast, the proportions of travel, biography and the “others” remained low and declined slightly throughout the period. By 1992, the proportion of others was higher than that of biography, accounting for 25% compared to 20%. As for travel, it started at 15% in the same year. The shares of others, biography, and travel continued to decline in 2012, falling to 12%, 8%, and 10%, correspondingly.