How quickly did amphetamine use increase after the 1940's?

How quickly did amphetamine use increase after the 1940's?

After 1949, not only do you have all those methamphetamine competitors, you have all these amphetamine competitors, we know fairly well from this lawsuit that it was 800 million tablets in 1945, and we know from FDA manufacturer surveys that by 1962 it had reached about 8 billion tablets. So we're talking about on a total population basis in 1945, the mid 40's, about 6 tablets per person per year in the US population, including children to 50 by 1962. So you can imagine a really sharp growth in consumption then over that period.