The pie charts provided illustrate the percentage of sales of different genres at one bookseller in 1972, 1992 and 2012.
Looking from an overall perspective, it is clear that adult fiction and children’s fiction showed an upward trend over the four decades, while the categories of bibliography and others witnessed a downward trend. The only category that experienced fluctuations over the years was travel.
Initially, in 1972, the others genre was dominant in the chart, accounting for 25%, while travel had the lowest figure, at 15%. Adult fiction, children’s fiction and bibliography represented the same proportion of sales, at 20% each.
In 1992, adult fiction reached its peak at 25%, while bibliography decreased by 5% and was recorded at 15%, which was also the lowest figure in 1992. The second-highest genre was children’s fiction, at 22%, while others accounted for 20% and travel for 18%.
In 2012, sales of adult fiction represented the highest percentage, at 45%, while bibliography had the lowest figure, at only 8%. Children’s fiction made up 25%, making it the second-largest category in the chart. Others accounted for 12%, while travel represented 10%.