HIVE and HBD exchange rates are always fluctuating and Waivio now keeps the entire history of daily rates, including the Steem epoch :-) Same goes and for the ten top world currencies, including the Canadian dollar.

Using Excel spreadsheet to create a similar report will take a long time, since every tiny transaction must be accounted for.

I totally agree, and this feature would help my accountants so much. As crypto grows and more people earn more through it, they're going to be pretty hungry for stuff like this, I imagine. Great job and thank you! 🙏