The late 20s saw a huge defection: w55 336 has 90,434 Memorial attendance for 1925, and the back pages of the Divine Purpose book have 17,380 for 1928---a loss of 80%!
Another piece of information that answers a long term question for me. Youre a regular font of knowldege arent you!? Lol.
I suspected as much of course. Thanks for the confirmation.