What age is reasonable for your daughter to date?

Makenzie
This isn't a question for my personal use, I'm just curious on what age most parents would allow their daughter to date. In this lifetime, teenaged girls are more open to sex than they were a couple years ago. Parents are often more "harsh" on their daughters due to the chances of, well, "making wrong decisions". Also, teenaged females are more opened to their boyfriends and seem to trust them more and quicker than family. For example, sending nudes, believing their every word (to get one thing) and so on. In a females teenaged years, they become more rebellious towards to their parents. For instance, sneaking out, skipping school, and putting boys before family. So what would you say is a perfect dating age for our precious baby girls?