jm ³2¥úÑãWk¦Ã×@NV¡hÕúEO0âü7àe±L¤The area under the curve since BCH was created looks about the same to me. I guess you'd have to do a more detailed analysis as to why they differ at various times.
https://whatsonchain.com/tx/a74e6b712ca41076345e6aa9639ada838f3f0f0293688258617e6c689f82c440