Question: is this good or bad?
Are there tasks outstanding that we (mods + community) have been unable to accomplish?
Is the balance between mod action and community action appropriate? Is it a problem that most actions are taken by the community, or does that reflect a problem with a lack of moderation by mods?
I think we have one mod, so I don't mean to suggest that that individual isn't doing enough. On the contrary, it seems like we're doing fine with one moderator. I'm really wondering if there's a problem if we don't secure a second (or third) mod in the current election. From the looks of your chart, we're pretty much self-regulating.
EDIT:
FYI, here are the top 12 activities over the past three years. Hard to interpret without some sense of total activity (number of questions/answers/comments etc), but maybe more convenient than comparing tables on different pages.