How to display cumulative data in graph for latest 10 quarter and the historic data should be added up

[#1]

Hi,

I have a data which consists of last10 years of data. But i would want to display only present 10 quarters, and add up the historic data in it. Also could you please help me sorting the data in descending order where i dont have any fields of "date time" data type

[tresesco]

PFA.

If you are struggling with sorting, please share your sample app.