Analysis to retrieve total element amount per month and yearly trend

Summary:

Good afternoon, I'm trying to build an analysis to get the total amount of elements (e.g., variable pay) + salary that is valid in a specific month in some countries and view the yearly trend. In the subject area, "element entries real time" I'm unable to find a time dimension that is useful for this purpose: in this SA, the "Time" folder only reflects when a certain element was first assigned to a person (basically, the effective start date).

Ideally, given the data on the left, I'd like to see the totals and graph I have on the right. Is there a way to achieve it?