Even the scaled score is not that informative (and perhaps crosses the line on age discrimination) because for older workers the population of people taking the SAT was much smaller as a percentage of high school grads (and presumably weighted towards higher IQs). It's also why there were so many fewer perfect SAT scores -- smaller population in the bell curve.

Number of perfect scores is also affected by the increase in the number of students who spend 20 hours each a week or more doing SAT prep.