Huh? Top five percent? @mardad what are you referring to?
Is this the end of the second filial set of the baby boom? Quite possibly. My father was born in 1956 and my mother in 1960, so yes that just about rounds it out. My parents are older than most of my friends' and I am the youngest child. This likely has little effect on the grand scheme of college applications. Take Cal-Berkeley for instance. They received 10,000 more apps than they did last year. The change is in the number of applications to elite universities, so the statistic isn't necessarily proportional to the entire pool when gauged against the rising competitiveness of high school students. With the increased focus on GPA and standardized testing, it is likely a flawed vantage to view the apps to schools like Columbia in correlation with the potential pool. As far as the top five percent, I am really lost, or perhaps I answered it already.