Oooh an even better more detailed link:

http://www.akc.org/reg/dogreg_stats.cfm

Of course this is for AKC once again. I can never find any information on UKC

Actually Jess Border Collies have gone UP in popularity since 2004. They were ranked 60 in 04

That really surprises me, though. I'd always thought BCs were a lot more popular than that. More popular than Aussies, anyway.