First of all thanks for the great job making all this data available!
I am a bit confused about the numbers of Yearly active users vs. Monthly active users. How I understand it - and please correct me if I am wrong - that taking for example June 30 2018 870,875,140 individual clients were active in the last 365 days (YAU), while 274,064,220 individual clients were active in the last 28 days (MAU).
Even if this is - as stated - “much more influenced by seasonal factors”, I am still scratching my head about the fact that the MAU is only about 30% of the YAU. Shouldn’t they be more or less the same, with MAU just having some seasonal dips?