The yield in fees for the first week is ~ 5.85% for your total stake in RFI.
So if you held 1,000 RFI for 1 week, you would now have 1,058.5 RFI and that keeps compounding.
This 5.85% depends on the amount and size of RFI transactions,
so in the near future, with an increase in transactions, this can go up even higher.