Rolled total of 63 times but didn't get any Special Chibis. Does the pity carry over or not?

I didnt hit the pity yet last year (December) and I didn't pull since i don't like the chibi so I decided to roll to get Zoe however I didn't get any chibi even after the 61st roll. I thought the pity would carry over but apparently it doesn't (at least in my case). Money wasted I guess. I don't really get what happened here and I kinda need some explaination on how the pity works here.