I know a few publishers who threw previuos kn's in the bin, and if the wts are aware of this, they are taking steps to make sure it doesn't happen this time.
The WTS is also aware that a significant number of people just make up numbers to put on their report, to keep the elders at bay. What would prevent such ones from making up a number of "tracts placed", in addition to whatever other numbers are made up?
The only reason I can think of for recording the number of placements is, so the WTS can later in some WT article or DC talk, say something about how "250 million tracts with this hard hitting timely message were delivered" or some folderol like that.
In the Revelation Climax Book, aren't there citations of how many millions of this or that or whatever tract or brochure was distributed in the 20's or 30's? Perhaps they are trying to recapture a little of the "good old days".
Then again, if they do publish such a number, any JW with more than 2 functioning brain cells would have to think "Huh! so, this vital, urgent, life-saving message reached only about 4% of the earth's population."