I would guess that there are more per capita because of environmental conditions, like the aggressive childhood vaccine schedule, birth control, the measurable amount of aluminum sprayed in the air (whether the intent is malevolent or benign, they have measured mountaintops like mt shasta and found aluminum, 4 × the amount in the snow compared to the soil, cant remember the exact measurement but there should be none), pesticides etc. I think these chemicals effect behavior. I think they have found ways to make people more aggressive or in other ways more docile. And i think those responsible for the poisoning were also behind the french revolution, honestly. The most malevolent characters havent changed they have just played a long game