I think this is interesting. The Social Security Administration has much information on the names of babies, which names are popular, which rose or fell over time, and so on. Stuart Buck notes, with subdued glee, that the name Hillary has become the most poisoned name in history: by 1992 it had risen to the 136th most common name, but within the the next year, l993, it sharply reversed course, and has dropped off the charts within 10 years. This was the greatest drop in popularity of a name ever, and displaced the previous poisoned name record holders, Ebeneezer and Adolph; it took them 30 years to make such a drop. By the way, I bet it will make a bit of a comeback. (Thanks to Jonah at The Corner)
Well, William went from 20 in 1992 to 11 in 2002...