how much does a warrant officer normally fly in a year?

It depends on what you fly and where your at. Most helicopter pilots fly around 300-500 hrs a year but that can change quickly if you are deployed or have recently returned from a deployment. FW pilots fly more, a good average is 600 hrs a year, but again it depends on the equipment and where your at.

There is a saying out there; "Helicopter time in your logbook is like VD in your medical records."

If the reverse is true, I have about 24,000 hrs of helo time - and I don't even know how to fly one!

That's the funniest thing I have ever heard.