What can we call "the total number of item sold/rent over a particular period"?

wild daisy

I'm looking for any word (*) in terms of business representing for "the total number of items sold/rent over a particular period"
For instance, a record shows a DVD store sold 100 DVDs, 50 Blu-ray, and rent 300 dvds this year.
I want to emphasize that " DVD rentals accounted for the largest proportion of __(*)__this year.
I tend to use "profit/ revenue"...., but the record didn't mention anything about money, so I have no idea which item helped the store earned most.
I hope you will understand what I try to indicate above. please excuse me for the subtle and bad description.
Thank you so much
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