Month-by-month relative growth of bookmarks, kudos, comments, works, and users for the year 2013 (in percent, starting on January 1, 2013). Bookmarks show the steepest increase (277%), users the lowest (77%). Kudos and comments show an almost identical growth, even though they differ in absolute numbers. All numbers can be found in the 'works & users' tab in the linked Google Drive spreadsheet.
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