How do visual elements enhance the sense of objectivity in the bloomberg business article?

The line graph provides a clear visual comparison between this year's flu and previous outbreaks.

Visual elements enable the viewers to easily identify the behavior or the movement of business cycles that are happening in the bloomberg business article. Without visual elements, it would be hard for people to determine whether business trends are experiencing an all-time high or an all-time low. It would give them a hard time to determine how they are going to proceed next with their own stocks and investments if such visual elements are not easily identifiable or included.