I don't know about every country specifically, but in the Baltics they are getting nearly 50 guys at the local events, here at the GP in Riccione we have 60. Not bad considering there is 3 other major international events on at the same time..
To be honest, that's a LOT more people than I see going to local slalom events! We haven't even been able to run a slalom Nationals in Australia for the past 3 years due to no interest, when our FW Nationals is getting better each year.
Just depends on the country I guess. The equipment right now is really good. All the brands are going fast and easy to use and we have more boards on the market than ever.
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