Page Rank Increases

is there a way to check the dates of page rank increases. I'd like to know how long it took me to achieve a high page rank or when milestones where met. Or what was my pagerank 3 years ago ???

Is there any way to find this information ?

I wouldn't be at all suprised to find a website somewhere recording dates of past Google (toolbar) PR updates!

Not that it'll be much good to you, 'cos there's no way to check your own past PR figures.

Frankly, I can't see the point!

I just check it by myself from time to time. But I am checking positions of my keywords almost every day automaticly with program that I wrote by myself. So thats positions in google are more important to me then what is my official page rank. It can be 9 but that's not important to me if I am not at first positions

There is no point in following PR - that green bar in google toolbar.

Its a useless thing.

I have clients constantly griping about low PR, when their site ranks number one for top keywords. It is one of these things that mid level marketing managers pick up from an IT guy and then use it in every other sentence. I think people should be talking keyword relevancy and overall google search rank and drop the PR discussion.