Are , drinking, and smoking as common in 15/16 year olds as movies and books make it seem?

I'm 15 and in so many movies and books they have parts where all these 15 or 16 year olds are either smokin something, partying with alcohol, and fricking doing it with another person. They make it seem like 99% of this age group is doing at least one of these but nobody's finding out. I would never do any of these and i feel like such a loser haha. So what is up with that, is all that the truth?