You can see how a customer has used their membership across billing intervals from either the Packages or Customers pages.

From Packages > click on the membership > Package customers > click on the customer from the Live or Expired list > select the booking or purchase details you wish to view from the Usage history drop-down menu.

From Customers > click on the customer's name > Purchase history > then select Packages > Live or Expired filter > click on the relevant membership > select the booking or purchase details you wish to view from the Usage history drop-down menu.