title: SSRS Column chart, total as last column
body: <p>I've got the following column chart: 
  Product names as Category groups with values for budget and revenue on each column. Now I want to create a final column (Total) which is the sum of each column. ie. one column with the total value of the budget and one with the total value of the revenue.</p>
  
  <p>Can this be done directly in the graph without having to do the calculations in the dataset? It's very easy to add a total to a table but seems to be hard to add it to a chart.</p>