How much recreational heroin is out there?

I’m not really sure what triggered this tonight but heroin has been on my mind. I’ve been sober for a few months but before that I was a heroin addict and on and off for about 8 years really bad. <br><br>I’ve done a lot of opiates and I’m curious what percent of people use heroin? How many heroin addicts are out there? We always here about the opiate problem but are most of these problems prescription or heroin? I’m not talking about users I’m talking about frequent addicts.