"Nine of every 1,000 married women in the United States divorced in 1960, according to the study. The rate increased to more than 22 per 1,000 by 1980, and declined..." thereafter.
But haven't we been told, for at least a generation, that "half of all marriages end in divorce"?
Seems like they forgot to square this new set of numbers with the other number they've been foisting on us.
They're using imaginary numbers.