Counting Projects started & finished each month

Hello All,

I'm trying to get a simple count of how many projects got started in each motnh and how many got completed. I have the start & end date for all projects, sample below:

Here's the output I'm looking for:

I've created an independent table with all months in it, but I think what's causing an issue for me is when I establish a relationship to my main table containing the dates. 

Any help would be much appreciated