The graph shows the results of a survey carried out in Brazil to determine the population's level of awareness regarding e-books in 2011 and 2015. In 2015, the share of respondents who stated they had heard of e-books increased to 41 percent, up from 30 percent in 2011.
Have you heard of e-books?
Yes, I have heard of them.
No, I have never heard of them.
No, I have never heard of them but I would like to know more about them.