Australia's 'Big Four' banks post second year of lower returns

SYDNEY (Reuters) - Australia's four major banks reported a second consecutive year of lower returns, dragged down by hefty customer compensation bills following mis-selling scandals, greater competition and a low credit growth environment.National Australia Bank Ltd , the last of the so-called "Big Four" to report annual earnings, on Thursday posted a 10.6% drop in profit, cut its final dividend and said it planned to raise about A$1.55 billion in new shares to help meet new regulatory capital..