Hi John, For this type of "time series", one approach (albeit manual)
would be to create a special project called "Backlog Stats", add a zero
duration Task for each month in which you intend to track stats with a
Planned Start and Planned Completion that matches that month (e.g. "Jan
2020" would start and end on 1/1/2020, etc.), add a custom form behind
each such Task where you can track (here's the manual part) the Number
of Open Projects, Number of Closed Projects, and (as a calc) the Number
o...