Bar Chart with Count & Sum

I had a bar chart that had two columns on each month showing; one was the count of the estimates sent and one was the sum of the estimates sent that month. I opened the chart then closed it and the count bar went away! How do I get it back? I have tried everything I can think of in the chart settings.

Here is what it used to look like, I edited the total columns to be yellow and added the blue columns and counts: