Have had a journal of this for the past 10 years. There was a big dip due to COVID in the past few (I'm Canadian and in one of the more cautious provinces), but we're back up to what's looking like about 200 this year. The journal gets saved in our hallowe'en decorations storage box so we won't lose it.

A second post-house-buying tip is to ask a couple neighbors how many kids you normally have for Hallowe'en in your first year there.