> It's interesting to note that as methamphetamine and amphetamine were more regulated in the 50s and 60s, it became more prevalent. ~0.2% of Americans had eve

> It's interesting to note that as methamphetamine and amphetamine were more regulated in the 50s and 60s, it became more prevalent. ~0.2% of Americans had ever used marijuana when it was first made illegal, whereas ~90% of American adults have used it now.