I never said that it would continue to decline indefinitely. I said it was exponential before, and it's still exponential, even though the rate has changed. In spite of the massive negative response here, that statement is perfectly true.

> I never said that it would continue to decline indefinitely.

It's been continuously declining for half a century after peaking, the assumption that it's suddenly reached a bottom at the most recent measurement and returned to an exponential steady state is unwarranted.