It looks like quadratic growth until around 2011, after that it becomes linear. This still seems like a lot of growth, considering the number of pageviews per article seems to be roughly constant over the last 5 years [1]
0: https://wikimediafoundation.org/about/financial-reports/
1: https://tools.wmflabs.org/pageviews/?project=en.wikipedia.or...
Edit: this is how last year's expenses break down:
Salaries and wages: 46,146,897
Awards and grants: 12,653,284
Internet hosting: 2,335,918
In-kind service expenses: 1,361,958
Donation processing expenses: 4,977,583
Professional service expenses: 8,998,261
Other operating expenses: 9,005,744
Travel and conferences: 2,867,774
Depreciation and amortization: 2,856,901
Special event expense, net: 209,690
------------------------------------------
Total expenses: 91,414,010
(sorry if that's unreadable on mobile)Ha.
They may have raised more or less than their annual budget this year plus I imagine probably spend some money on their email campaigns etc.
So it doesn’t seem totally out of line.
If you live in SF, Seattle, Portland, NYC, Boston, Chicago or Philly, 80K is lower-middle class if that. Other cities/countries, it's incredible... just depends.