$34b refers to cocaine; $100b refers to everything.
It's not an unreasonable guess.
The numbers are hard to get right. Here's something about different statistical methods that end up with very different numbers (about 650,000 people who used heroin in a year vs about 1.5 million people; about 60,000 people who use heroin nearly daily vs neary a million people who used heroin nearly daily.)
It's not an unreasonable guess.
The numbers are hard to get right. Here's something about different statistical methods that end up with very different numbers (about 650,000 people who used heroin in a year vs about 1.5 million people; about 60,000 people who use heroin nearly daily vs neary a million people who used heroin nearly daily.)
> http://www.forbes.com/sites/jacobsullum/2014/03/10/how-many-...