If you've adjuncted, please enter your data -- it's anonymous, and without data, we can't argue nearly as effectively for better, fair pay for our adjuncts.
(Although I'm not tenure-track, my current renewable contract position is SO much better than most adjuncts that I hesitate to call myself an adjunct at this point. Although technically, I suppose I still am.)
I do wish they'd offered a field for entering the years you worked there -- I would enter my earlier positions, but it seems misleading, given some of them were ten years ago, and I have no idea if the salaries have gone up or down since then.
I should note that the Roosevelt and Northwestern positions were after completing a Ph.D., and after the international publication of Bodies in Motion, so that undoubtedly contributed to the salary jump -- but less to how much they offer for the positions, than to which positions I became competitive for. The SLCC and Utah positions took place in the same year; I more than doubled my salary by teaching at a different school.