Well, that depended on co factors implemented into the last HF as you know too......it mattered since then on who had voted and some other factors but if you want a round rough figure I would say :
I have just around 16k SP now, y-day a 100% vote was worth 50¢ to $5 (those last co factors included) -- and now it is roughly 10x that -- but also now we have a few super votes / day included too.