Alaska/Canada 2017
Australia 2016
Hawaii 2015
Australia 2015
Australia and New Zealand 2014
Seattle 2013
Nevada 2011
Utah 2011
Northern Arizona 2011
Galapagos 2011
Peru 2011
Quito 2011
Colorado 2009
Australia and New Zealand 2008
Europe 2007
Amsterdam 2007
Europe 2006
Asia 2005
Australia and New Zealand 2003
