Coverage of Auto Ownership Data

I am looking through the Infutor Auto Ownership dataset and wanted to ask about the coverage of the information given. When looking at California specifically, it seems like there are discrepancies. Specifically on Battery electric vehicles, the California Electric Commission published new registrations of BEVs in the range of 160-350k per year in the years 2021 - 2025, while the Infutor dataset only has around 100-300 cars that meet this criteria, which is orders of magnitude less.

Any help here would be much appreciated!.