That all being said (don't even post if you didn't read it) the chances of not even knowing what Pokemon was is slim to none. Considering on top of all that, there were commercials all over T.V. And the radio.
So unless you're an extremely sheltered child who was home schooled, and parents controlled everything you did or watched, and never took you outside or let you be around other children or even go to the store, and literally kept you in your house ALL THE TIME, then it's almost physically impossible to not know what Pokemon is. The only way it would work even if all that was true is through a SERIES of coincidences, which all of which would be extremely unlikely to happen even once, let alone several times...
Sorry for the long post.