The table above was created using QlikView. Definining the Pivot Table, I used Customers as the first Dimension and a Valuelist('Monthly','Cumulative') as the second dimension (calculated). When the chart was displayed, I moved the second dimension to the right to be displayed as columns.
In the presentation tab, I defined the alignment of the data and labels.
In the expressions you need to make reference to the dimension to make the proper calculations (for monthly or Cumulative).
If this explanation didn't make it clear to you, I can recreate the app and upload it.