1969 North America - Canada / USA

1971 North America - USA / Canada

1974 North America - Canada / USA

1977 Patagonia, Argentina

1981 Australia

1983 Australia

1987 Australia – New Zealand

1990 Australia - Hong Kong

1996 Australia – New Zealand

1997 Lisboa, Portugal

1999 Australia; Tasmania - Darwin

2003 New Zealand - Australia

2005 Ireland

2006 Ireland

2007 Patagonia, Argentina

2010 USA and Canada