well on the Commsec figures in front of me, the ROE has NEVER been higher than about 8 during the past 10 years. that's long enough for me.
2007 ROE 2.1
2008 8.0
2009 8.5
2010 6.5
2011 5.7
2012 6.0
2013 6.1
2014 3.9
2015 6.1
2016 6.6
so much for ROE being " lumpy". pretty pathetic really !!