So Class Racing is clearly in serious decline, but

We did Chichester Race week this year (FED) which had 60 200's. 

Well then, since you said that....it looks like the US dinghy national title fleets have dropped around 9% since 2007-2012. That's a sample of 27 major classes but not taking into account the junior classes, or all of the youth and masters.  Given the mood of doom and gloom around sailing in the USA, that seems quite healthy.

I've still got to grind through Aussie numbers. They don't look too pretty, despite the strong economy, but that's just eyeballing stuff.

I'll put the detailed US info up on the blog over the next couple of days.

The Finn had four sailors who did the Masters but not the regular UK nationals, which wasn't really significant given that we're dealing with 60+ boats. 

Where is gets interesting is doing international comparisons, which is probably of no interest to most here. I'm just updating the US nationals attendance table that Roger Jolly used to run. As you may recall, Roger ignored the Youth and Junior classes in his tally. When you add those classes in, it underlines the strength of the US habit of having big fleets of youth racing in 200kg 16 footers as a separate division to the Open fleet, and also of having significant numbers of adults race in 8ft pram dinghies as a separate division to the Youth. It's quite odd in some ways but in one place where the "kids in old peoples' boats" thing is done, the inland lakes, there seems to be a high proportion of people who stick in the sport. Maybe it actually works?

PS - going through the Finn entry lists I came across a member of the sailing media who has been banging on for decades about the fact that people should sail multis and "extreme" boats and not ageing mainstream monos. It turns out that he owns a Finn and another mainstream mono - yet another case of someone shouting "do as I say, not as I do" to sailors.

Yup :)