Dude. You claim that "The uninsured rate has actually remained roughly flat at 15%." in response to nhashem's claim that there were fewer uninsured in 1980. But your graph only goes back to 1987!!
Geez.
Geez.
My graph does go back to 1987, because that's when the census started collecting data on health insurance. If nhashem has data he is free to post it. It's up to him to prove his claim, not on me to disprove an unsourced assertion.
Data aside, that is not a logically true claim: in 1980, I had health insurance... through my mother's employer.
Also of note is that when you do calculate in Spouses and children, they still had insurance because it was less common to "only insure yourself" (I have no data to back that statement up).
But yes, I suppose that on some level you're right: 80% of the population has probably never been simultaneously employed.
Nor will that ever be the case.