Yeah, that's hard to answer. I think most experts would agree any time-frame you mention is certainly possible with HPV, but the harder question to answer might be just how likely it is. I know there are studies (and I can't quote them off the top of my head, unfortunately) that conclude people can go many years, a decade or two, so it's not out of the question. Remember, too, that a Pap test does NOT look for HPV, and can only find cell changes caused by the virus. So, a woman with HPV but no corresponding cell changes to her cervix will have a normal Pap test result.
To be sure, it's not typical for HPV to persist for many years, but as we age our immunity might fall off a bit, which might allow latent infections to emerge. I'm sorry for not being able to offer a more substantial answer, but I hope this helps some.