Passing on track stats

[DrTre]

Can anyone point me in the direction of a Carling Opta like site that gives stats on the overtakes in F1 over the years.

I'm actually more interested in those for the top 6 positions than anything else.

I freely admit to having rose tinted specs over this issue and would actually like to be proven wrong, that F1 hasn't dwindled in terms of overtaking at the front, on track, for position.

(To anyone that says F1 isn't about overtaking, that's absolute twaddle, it's racing, of course it's about overtaking, they're not out there showcasing all this wonderful technology for showcasings sake. That it's not NASCAR is a different issue)