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IMO, you should be watching the month over month numbers and only using YoY to contextualize. Looking at the delta of YoY data doesn't tell you much without knowing the rate for the monthly report that was dropped and the monthly report that was gained.

YoY averages out seasonality though, a lot of things go through annual cycles.

You need a large time window or error bars will be large.

Annual numbers are also canon.

People think on yearly timescales

they don't want make it easy to figure out how much prices have spiked since inflation took off