what are the attendances of the past wikimaia conferences?
wikimania 2005, 380, wikimania 2006, 400, wikimania 2007, 440, wikimania 2008, 650, wikimania 2009, 559, wikimania 2010, about 500, wikimania 2011, 720, wikimania 2012, 1,400, wikimania 2013, 700, wikimania 2014, n/a
which conference had the fewest attendees?
wikimania 2005