The one word title is to avoid puns …
The New York Times reported on April 13 that the number of vasectomy surgeries also seems to be an inverse indicator for the economy.
… Dr. Goldstein … was performing about six vasectomies a month. Then, in November, the number rose to nine, where it was holding steady through the end of March.
The article has quite a bit more anecdotal evidence.
In particular, it notes that there is:
… A historical parallel in the Great Depression, when the birth rate fell sharply.
That’s an interesting piece of information from the perspective of the Solow model.