(If you have other group photos from past conferences that we might add please send them to Peter Siegel) 2022 Delft 2021 Chengdu 2019 Paris 2018 Nagoya 2017 Cancun 2015 Hong Kong 2015 Hong Kong 2014 Tuscon 2011 Houston 2011 Houston 2010 Rome 2008 Pasadena 2004 Karlsruhe 2004 Karlsruhe 2003 Otsu 2001 Toulouse 2001 Toulouse 1998 Colchester, UK 1994 Sendai 1994 Sendai 1993 Colchester