The pie charts give statistical information about the different types of books were sold via bookseller over a 40-years.
Overall, it is clear that there was an increasing trend in adult fiction and children’s fiction, while the reverse was true for biography and others. It is also worth mentioning that the travel books remained more or less unchanged over the given period as to selling.
Delving into the figure of increasing trend, the proportion of adult fiction books witnessed a marginal rise from 20% to 25% between 1972 and 1992, whereas it soared to 45% by the end of the year. Furthermore, the percentage of children’s fiction books increased slightly between 1972,1992 and 2012, reaching at 20%, 22% and 25%.
It is evident that the rates of biography and others books stood at 20% and 25% respectively in the initial of the year, while their figures further continued decreasing trend by 2012. It is also noting that the quantity of travel books fluctuated slowly at around 15% throughout the period.