From roughly 1975 year, the proportion of the U.S. population into the Bureau of the Census category that is “middle relative income” where the “middle class’ has: (1) grown since many former upper-class people lost lucrative jobs because of outsourcing. (2) decreased, whereas the proportions of people in both low relative income and high relative income categories have increased. (3) stagnated, primarily since there have been so many baby boomers in the labor force. (4) increased since middle class people have been the primary beneficiaries of tax cuts. (5) increased since jobs in the service sector pay much better than jobs in manufacturing.
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