The pie charts illustrates the percentage of five kinds of books sold by bookseller in 1972, 1992 and 2012
Overall,it is clearly evident that the Adult fiction and Childrens fiction have rised.In contrast, other kinds of books as travel,biography and other fluctuated in percentage between 1972 and 2012
To begin with, Adult fiction was 20% same as childrens fiction in 1972. In 1992, adult fiction increased to 25%,while childrens fiction rised to 22% At the year 2012 adult fiction reached the largest 45% while, childrens fiction was only 25%. Biography saw a downward trend from 20%,15%, then only 8% in the years of 1972,1992 and 2012.
In 1972 other kinds of books dropped a little from 25% to 20% in 1992, and then declined further to 12%. Whereas, travel books slightly increased from 15% in 1972 to 18% in 1992 which then dropped to 10% after 20 years in 2012.
In summary, it can be seen that there was fluctuation in each kinds of sold books, exept adult fiction and childrens fiction because it keeps climbing.
