Almost one in 10 of those asked said that they had had slept with more than 10 lovers by the age of 24. The average was 5.65 people.It's not so much the average as the standard deviations that would show where the serious problem is. Remember, the risk of marital failure goes up considerably at 2+ previous lovers. So, whereas the average woman was in the reasonable risk category two generations ago, not only is the average woman now well outside that range, but at this rate, the average will reach the nuclear "very low chance of marital success" range in another two generations.
By contrast, women of their mother’s generation, who were in their early twenties in the 1980s, had had an average of 3.72 sexual partners by the same age.And the previous generation were even less promiscuous.Women of their grandmother’s generation, aged 24 in the 1960s, averaged just 1.67 partners.
This should also serve to successfully address the atheist demand to prove that declining religious observance is a reliable indicator of declining moral standards.