How do you find out how many suspended data characters your course has used?

I have asked google this question about 1000 different ways over the last 2 days and all it does it take me to discussions about how to lower suspended data in a course, or to really techy posts about deciphering codes and what not but all I want to know is how do you find out the figure of suspended data characters that your course has used?

Now before someone misinterprets my question again, here is an example of what I am asking:

"My course is large and has many slides with different layers, because of this the suspended data characters for this course is 20,890"

How to they find out this fugure - 20,890 ??

Is there an option hidden within storyline that you click and it shows you how many suspended data characters your course has? Or is there a file within the published files of a published course that has this figure in it?

Many thanks to anyone who can give me this information!

PS I'm using Storyline 3

:)