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World population: 3.4 billion (it’s now 6.4 billion)

Average yearly wage in the US: $4,938

40% of women worked outside the home.

Life expectancy: 70.2 years (it’s now about 78)

A postage stamps cost 5 cents

Gallon of gas: 32 cents

McDonald’s hamburger: 15 cents

A movie ticket: $1.09

A gallon of milk: 99 cents.