Where are you sourcing that data from? The graph I linked using data from the U.S. Bureau of Labor Statistics doesn't go back that far, so comparing to 1970 would not be possible.

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BobbyJo 3 hours ago | parent [-]

US Census tracks income, its just harder to pull out since they don't provide nice charts like the fed.

	▲	Ajedi32 2 hours ago \| parent [-]
		Well there's this which goes back to 1967: https://www.census.gov/library/visualizations/2025/demo/p60-... I'm having trouble finding the raw data though. In any case I'm not seeing any big drop in the 1970s.