(...) I do agree it is ambiguous (and can't actually remember what was meant even though I believe I drafted that statement...) and the wording should be tightened. Given the non-exceptional rules I assume it means for the duration of being a parts (...) (17 years ago, 5-Oct-07, to lugnet.cad.dev.org.ldraw)
(...) I would like to think that it meant "5 in the last one year", since we want people who are CURRENTLY active in the LDraw community. That is also the way that I naturally read the sentence. But it can definitely be read either way. And given (...) (17 years ago, 5-Oct-07, to lugnet.cad.dev.org.ldraw)