Charts - How to show cumulative in a bar chart

[Gooty]

Hi, 

Looking for help with Charts macro on confluence. 

I have a table which list of columns for -  no of use cases, no of test cases and the release in which they are automated. 

I am looking for charts 

1. Display release wise growth in use case completed. [eg., release 1 -10; release2 - 5., I want the second column to show 15(10+5)]. 

2. Display the sum of test cases completed based on release. (like above). 

3. Also, if I can populate the percentage of completion based on release. 

Any help on how to do it is much appreciated.

Thanks 

Sam