How are you working that out?
I have a 'base-line' to use for 1993 using the following
Watchtower 1 April 1994, page 16, paragraph 8
Each year about 40,000 individuals are disfellowshipped from Jehovah’s organization.
I make a total of 1,708,635 total disfellowshipped.
Using your one third reinstated (569,544), but ignoring being disfellowshipped twice etc
I end up with 1,139,091 remaining disfellowshipped.
And, of course, due to dying, the actual number of disfellowshipped ones actually alive currently would be less