Do more people smoke cigarettes or pot or both?

I know a number of people who smoke cigarettes and a number of people who smoke pot and a few people who smoke both. I would imagine it’s difficult to measure because of the differences in legality. Obviously, people can smoke cigarettes in public and while it is frowned upon people do not need to hide it because it is legal. However, because pot-smoking is illegal, it is more difficult to gauge who does and who doesn’t because you don’t see crowds of pot-smokers outside the student center at 2 in the afternoon. Just to clarify, I don’t think either one is wrong or right, I’m just honestly curious as to which is more popular.