Crystal Reports :: Displaying Months In A Year

I am trying to create a report which is composed of all of the months in a year. My biggest problem is that we do counts for each month. These counts shouldn't change for previous months. They should remain static. But when I run the current month, I want to display the values in the previous months plus my current value. Do I need to create a formula for each month of the year or is there an easier way to capture this information?

For example:

The end of the fiscal year is July 11. I want to check my values for February to see what accounts are open and counted for this month as well as the accounts that are still open from January. These would all display in February. But I want the January account to report the same number (all accounts open in January) it held when I ran it in January. I want to do this for the entire year.