I should probably point out these were not just recent grads who were polled. The details (few that we have) down toward the bottom said it was weighted for gender and age to try to represent all adults over age 18.
Of course, it would be interesting to those of us who like stats (I’m in that group) to see the age/gender breakdown, but at this point, no, one can’t make the claim that it’s today’s generation of grads that don’t know this info vs older grads.
ETA: When we teach about this we mention the numbers actually come from India (most of them - shape - etc) via Arab traders, so no new info there.