The pie charts illustrate the proportion of different sorts of books -adult fiction,children’s fiction,biography,travel and others – by a bookseller in the years between 1972 and 2012.
Overall, the percentage of adult fiction and children’s fiction showed rising trends,with the former type witnessing a noticeable growth and the latter experiencing a steady increase,whereas biography,travel and other kinds of books declined over the period surveyed.
Focusing on the bigger categories first,starting at 20% in 1972,the figure of adult fiction books continued to rise to 25 % in 1992 and 45 % in the final year and also the rate of children’s fiction books showed a normal increase from 20 % in 1972 to 25 % in 2012.
When it comes to lower figures,despite a slight rise in travel books,which grew from 15 % in 1972 to 18 % in 1992,it dropped to 10 % in the final year.According to biography books,the percent was 20 % in the initial year,before declining 15 % in 1992 and 8 % in 2012.Looking at other kinds of books,the proportion of them stood at 25 % in the first period,however, the figure that then nearly halved,being 12 % in 2012.