This graph ending in 2020 is such a poor data set, you’re literally ending in an outlier

Can you explain what you mean? What makes you say 2020 is an outlier, or that it would be cleaner to omit data?

The time resolution / degree of smoothing in the chart is not really clear, but given the trend back to 2010, the 2020 data doesn’t seem implausible.

I mean, there was sort of a massive world-halting pandemic in 2020, which forced many people into seclusion. In many areas, it wasn’t even legal to go to a social bar. So yeah, I’d call it a bit of an outlier.