What age do people start expecting sex in a relationship?

Okay so I'm 16F turning 17 pretty soon and I'm in no way trying to hurry losing my virginity. Quite the opposite actually as I'm terrified of stds and pregnancy. Which brings me to my question around what age is the average person going to expect to have sex in a relationship?

Would the average person be fine in a sexless relationship at like 18? What about like 23? Or 30?

Edit: I think a lot of people got confused. I'm not even in a relationship, I know how to communicate boundaries. I just mean in a general sense, around what age are most people expecting to occasionally have sex within a relationship. Just asking so I know when I'll have to explicitly express that I'm waiting.