Show all months on graph even if data = 0?

Show all months on graph even if data = 0?

We have an application that tracks shipped product, each shipment is a row of data. however if no shipments for that product occured in a given time period the graphing engine does not display those months,. Is there a way to set it to show months even if there is no data in them? 

below the line graph is a running summation of product shipped. There were no shipments in October or November so it doesnt show them on the X axis. Ideally this would have flat lined for Oct and November.