The Memorial attendance is from 2013 - which is less than for 2011 (19,374,737). I don't think they've yet "released" the 2014 Memorial attendance.
Of course, the "Fast Facts" do not include the yearly increase in those taking the emblems who allegedly have the heavenly hope. Some increases are a tad uncomfortable to publicize. Moving right along...
BTW, that JW.org has a blurb called "Fast Facts" is unintentionally revealing: There's a common journalisitc expression that reads something like, 'playing loose and fast with facts' which describes something that is deceitful. Oops