I use Zoho Analytics and Zoho Desk. I have my data fro Zoho Desk refresh into Analytics daily. 

I wanted to be able to produce some reports that will show me the backlog of tickets per month historically. So i can see on the last day of the month, per month what the backlog was at.

e.g.

Jan 100

Feb 200

March 300

Apr 300

May 200

June 250

Any one know how you can do this?