It's not a far cry, what I said was basically what happened (average time diff 1st-10th in teens vs 20s). My first comment about the difference was off the cuff, but when you average it out it's pretty close to what I first guestimated

That's averaged out over 10 year spans so yes that gives you a pretty good idea of trends. The whole point of the 10yr spans is to reduce the impact of outliers

The numbers don't lie. Obviously we are limited by a relatively small data set that contains outliers, but if you chart it out it will still trend downward

I'd bet if we stretch it out and check the avg time delta between 1st-20th place over those time frames, the downward trend would be even more obvious

I know there's a data nerd out there just dying to chart all this out! (hint hint)