Yearbook Average History Past GBBA / GBUSBCA final averages (PDF Format): 2020-21 2015-16 2010-11 2005-06 2019-20 2014-15 2009-10 2004-05 2018-19 2013-14 2008-09 2003-04 2017-18 2012-13 2007-08 2002-03 2016-17 2011-12 2006-07