That seems like a very specific and comparatively small time period that doesn't really stack up to the attempted scale of claiming that a considerable portion

That seems like a very specific and comparatively small time period that doesn't really stack up to the attempted scale of claiming that a considerable portion of revenue is used to destabilize middle east states. It gave them plenty of funds for sure (and only for a limited time) but saying it's a significant enough portion to the point of lending credence to the claim being discussed? I have trouble buying that without a source.