I don't know if you've read anything like this before, but I'd like to share anyway. As you know, we hear time and time again how we've preached pretty much in every country on Earth (with a few exceptions for safety reasons). Well, maybe we have, but that doesn't mean we've reached even half of the people on Earth. I'd like to explain looking at just 5 countries: China, India, Indonesia, Pakistan and Bangladesh. These countries are some of the biggest demographically. Together, they contain around 45% (3,084,214,968) of the worlds inhabitants.
Yet put together, they have 74,635 publishers according to a recent yearbook. That's an insanely large territory for such a small number of witnesses; that's one for every 41,323 people. And these aren't western countries so most of them don't even believe in Jesus or Jehovah or the bible, so they'd be a tough crowd. I doubt that most of these 3 billion people have heard "the good news".
These are just 5 of the world's countries. If you were to add up some more of the bigger ones or even the rest of them, we could conclude that the JW have not preached to anywhere near the whole "inhabited earth for a witness to all the nations; and then the end will come."
Country Population Publishers
China 1,338,612,968 20,768*
India 1,183,416,000 30,717
Indonesia 229,965,000 22,023
Pakistan 170,000,000 1,000
Bangladesh 162,221,000 127
totals 3,084,214,968 74,635
*extremely optimistic guesstimate