Have a table with records that include a client Start Date and End Date. Want to make a report that shows a count per month of how many records for that month have a Start Date in or before that month and have an End Date after that month (or no End Date at all).

So record 1 - Start Jan 2020 End (none); record 2 - Start May 2020 End July 2020

Report:
Jan 2020 1

Feb 2020 1

Mar 2020 1

April 2020 1

May 2020 2

June 2020 2

July 2020 2

August 2020 1

Sept 2020 1

etc.

Can't seem to figure out how to do the set-up, calculations etc to make that happen - any ideas?