The bar graph illustrates the information about sales figures for reading substances between 2002 to 2012.
Overall, the selling of histroy books was more in every year than any other type of books, but on the other hand the sales of hobby books was least as compared to the other varieties of books.
In 2002, the sales of histroy books was more than 4000 but the sales of other types of books was less than 2000. After two years the sales of histroy books increased only 1000 and sales of art books reached at 2000 but the sales of other types are still below 2000.
In 2006, the sales of histroy books was more than eight thousand and the sales of both art and entertainment books was same, but the sales of hobby books was agian fell down. In 2008 there is a suuden increase in the sales of histroy books and sales was reached at 10000, while in this year the selling of art and entertainment book was still remain equal.
In 2010 an 2012 the sales are almost same but there is litte bit change in the sales of histroy book because in 2012 the sales of histroy books was more than in 2010, but the sales of other types was almost same.
