belgium (2003)
cambodia (1994)
china (every year)
india (1995)
japan (2001, 2006)
malaysia (2001)
the maldives (2005)
mauritius (2002)
myanmar (1994)
nepal (1993)
the netherlands (2003)
singapore (2001)
sri lanka (2005)
thailand (1994, 2003, 2005, 2006)
the united kingdom (2003)
vietnam (1994)