During a full sex session (not a quickie) I average 2-3, I think. Occasionally more. During a quickie, I may have one or may not come at all, and that's ok.
For me, I don't think semen has anything to do with my orgasms. I've had very powerful & plentiful orgasms without having any contact with his genitals at all...although, if given a choice...
![Smilie](/tfp/images/smilies/smile.gif)