Some groups are really small, others have a constant turnout of about 20-30 people, only one meetup has had more than 100 people attend regularly. Over the past year, I haven't notice an increase in the number of attendees, but maybe there are more people joining these, and we don't notice because the number of groups has increased.

We did host a block party in September (free entry, about 300 people dropped by), and a halving party (ticketed, about 120 people joined)