The Camera & Imaging Products Association presentation at the CP+2023 show indicated that average camera prices doubled in 3 years and increased 6 times in 10 years. Here is a recap of the presentation:
CIPA (Camera & Imaging Products Association in Japan) published their latest camera production data (orange: 2022, black: 2021, blue: 2020): Next graphs are based on the CIPA numbers from the past 15 years: Additional information from NikonRumors: