How many times a campaign was triggered

Is there anyway to report on how many times a campaign was triggered during a time frame?

We use a smart campaign to qualify leads (new and old) on a field A value change. All leads can run through the campaign every time.

smart lists: (any)

1. new leads with a value in Field A

2. old leads have a change of value in Field A

flow actions: add to a MQL lists

change program status

change lead status to MQL

Now I want to run a report on how many times the campaign was triggered within a month, so I can cover both new leads and old leads.

Some old leads may have already become MQL and member of the smart campaigns so I cannot get an accurate number by running report on the status change.

Please share if you have any thoughts and ideas, thanks!