I wanna see the total of sellings in Sales Analysis (in Reports).

I use Filter: Sales 
and
Group By: Salesperson

I see the chart, but I see the total of sellings/person only when I move mouse over the chart, like displayed on the picture.

http://postimg.org/image/wlhpbx4jj/

I want to see the total of sellings by default, without need to move the mouse over the chart. Should I create a new Group By option named 'Total' ? If yes, how do I do that?