Defender ATP Amount of Logs/data

Hello,

We are looking to expand the retention period of our ATP logs/Data from the max 180 days in the console. WE are looking to use a storage account in Azure. Before we would like to know just how much data we should expect to be stored so we can budget the cost?

Any help on how we could figure out how much data we currently have or ingest in the ATP console?

Thanks!