https://unemploymentdata.com/wp-cont...-11-3-2017.png
I bet it has more to do with an aging population, retirements, or people staying home to care for kids, or family, and unemployment but that's speculation without accompanying data. It is ticking up, but the high range is 67 and the low is 62.5, which is not that wide, 5 points or so over a decade.
I could see a factors more with more data.