No. Do you? The figures I stated were the highest-recorded memberships, taken at the peak of the Klan's political power, and will likely never be exceeded. The modern Klan, so far as it still exists, has been politically irrelevant for decades, at least in the South.
Do you even have a date for those figures, never mind recent ones? Are we talking 1967 membership? 1927 membership? What? Websites like Klanwatch show that what's left of the Klan seems to be primarily in the south.