That chart says it’s for households, not individuals so for the time scale shown (70s onwards) all you’re seeing is that 1 earner households became 2 earner households.
The stuff about upper class growing does not follow from that. Poor analysis.
That chart says it’s for households, not individuals so for the time scale shown (70s onwards) all you’re seeing is that 1 earner households became 2 earner households.
The stuff about upper class growing does not follow from that. Poor analysis.