no i dont think that its 1 year per chapter & while it didnt say 100years ago i believe it said a century ago & then the chapter after urahara aquired miyori it said like 9years later to 101 years ago (i think i have 2 recheck the 101 years part but it does say 9 years later)
so im guessing its either 100 years go or 91 but id think it would b 100 years because thats then urahara & co leave SS
Edit i was rite it says 101 years ago 9years after urahara becomes captain
