First conference (1972)
10
attendees, Chicago
Peak attendance
908
2018, New York City
Peak membership
1,391
1993, San Francisco
Current membership
841
as of 7/1/2026
2026 Montréal
467
final
Conference attendance & membership — 1972 to 2026
Open circles = averaged figures · 1976–1978, 1981 & 1999–2001, 2004–2005 attendance averaged from EB reports · 2020 cancelled · 2021 virtual · 2025 virtual · 2026 Montreal final