Here's the organisation that undertakes the research and produces the report;
The Insurance Institute for Highway Safety (IIHS)
"The Insurance Institute for Highway Safety (IIHS) is an independent, nonprofit scientific and educational organization dedicated to reducing the losses — deaths, injuries and property damage — from motor vehicle crashes.
The Highway Loss Data Institute (HLDI) shares and supports this mission through scientific studies of insurance data representing the human and economic losses resulting from the ownership and operation of different types of vehicles and by publishing insurance loss results by vehicle make and model.
Both organizations are wholly supported by auto insurers and insurance associations."
I've attached the list of member groups from the IIHS website.