It's different for everyone, jd, so impossible to give you an average. You don't have to be at it all the time..... there are many other ways to express your mutual love and attraction. People have different level sex drives too - there are many things to take into consideration, and whether you are both tired, shifts not coinciding at work, etc. I wouldn't worry about it, as long as both you and your lady wife are talking about it. Ask her what she thinks, too - if she's agreeing with your OP then perhaps you both need to think about the frequency - but you can't "do it" to order just because it's Wednesday!