No, we don’t know that.
We not only do not know that, but you know that we do not know that, since there was a long discussion on the many ways in which that number is flawed, including but not limited to it being a very rough estimate not backed up by any calculations at all that is based solely on an extremely small sample size of observed spreads of resistant malaria in humans that includes many other relevant factors that you (and Behe) ignored despite them being quoted from the original paper by Nicholas White where that number appeared.
All this can be found in this thread, which you took part in. You are repeating the claim you made then as if the objections in that thread, most of which you failed to address, were never made.