Thanks Splash. Today, you da man!
How interesting that in 2014 there were over 830 more partakers of the emblems than there were nearly 55 years ago in 1960 - the one area of increase jw organization does not want!
Notice also that in the earlier listed decades, Memorial attendance inexorably increased year after year, with the very first recorded decline in 1977, and the second just under 20 years later (1996).
So all this talk about the increase or decrease of Memorial attendance depending on the day of the week (weekends having a positive correlation with increased attendance) on which it is held is a purely recent occurrence. In earlier decades it did not matter what day it was held because increased attendance on the year before was still evident.
Another observation: Because jw organization slices the world's territories up in "lands" - and not countries - it creates the impression that JWs are actively present in more places than any other group. Another poster pointed out there are only about 180 to 200 "countries" in the world (could someone provide a more exact number), whereas jws boast being active in 239 "lands".