I did some summaries of F-Class numbers competing at Queens series over the last 5 years. There's no doubt that F/TR is growing fastest, F-Std hasn't grown over that time, and this year, F-Open numbers have dropped a little. BTW its called "Calendar Years", but is actually November to November, because the ACT Queens is included in the following year. Note also that I haven't just added up the numbers in every field - this counts the shooters who have completed at least one event (leadup or Queens) during the year.

I should add that total F-Class Queens participation has increased every year, but has flattened out. 2014 showed a very big increase, but 2015 hardly any. Maybe the publicity from the FCWC boosted numbers? Will be interesting to see how 2016 goes i.e. will growth resume?