Memberships are for the current calendar year (Jan 1 - Dec 31) regardless of the date you join.
Current membership rates:
2017 Madrid, SPAIN
2016 Bar Harbor, UNITED STATES
2015 Uppsala, SWEDEN
2014 Chicago, UNITED STATES2013 Leuven, BELGIUM
2012 Boulder, UNITED STATES
2011 Rome, ITALY
2010 Halifax, CANADA
2009 Dresden, GERMANY
2008 Portland, UNITED STATES
2007 Doorwerth, NETHERLANDS
2006 Vancouver, CANADA
2005 Sitges, SPAIN
2003 New Orleans, UNITED STATES
2002 Tours, FRANCE
2001 San Diego, UNITED STATES
2000 Brighton, UNITED KINGDOM
1999 Key Largo, UNITED STATES
1997 Orleans, FRANCE