Well, you got slavery and then another 100 years of overt discrimination and then more years of a little less overt discrimination, etc., so the number would be far greater than what you could expect even a couple generations pay.
That is not something I am advocating.
I am advocating that we at least recognize and agree there is systemic racism as defined in this thread. That would be a good start. Then we could all focus a bit more on how to address that particular problem in a way that is practical, reasonable, and not unduly burdensome on people that are not responsible for the systemic racism.