Manually Incrementing Version ID Whole Number

We have a requirement that when a page is activated, a version that is subsequently created should increment its id's whole number. So for example a page on version number 1.13, when activated, should create a version 2.0. Looking through the API there doesn't appear to be any way to control the actual version number, just the label. If we set the label to 2.0, obviously the next version manually created would be 1.15 because the label doesn't effect the actual id. Is there any way within CQ/JCR to change this number?

Thanks