Is your company actually selecting 20 kids at random, or selecting 20 from the best of the ones applying? Are you also comparing this over a long timeframe? 11

Is your company actually selecting 20 kids at random, or selecting 20 from the best of the ones applying? Are you also comparing this over a long timeframe? 112 in the 70's -> 100 now means less than 1 point every 3 years. You probably can't notice a difference that small year over year.