Graph is daily average of flagged revisions reviewers in month and it is generated from tool labs database. Wikipedias included to graph are Finnish, Arabic, Alemannic, Bosnian, Belarusian, Esperanto, German, Hungarian, Indonesian, Polish, Russian, Turkish, Ukranian. SQL query to generate data was "SELECT avg(uc) AS avg_reviewers_per_day, avg(cc) AS avg_reviews_per_day, floor(avg(cc)/avg(uc)) AS avg_reviews_per_reviewer, floor(d/100) AS dd FROM ( SELECT sum(1) as uc, sum(c) as cc, d from ( SELECT sum(1) as c, log_user_text, floor(log_timestamp/1000000) as d FROM fiwiki_p.logging WHERE log_action IN ('approve', 'approve2') group by log_user,d ) AS tmp group by d) AS tmp2 group by dd"