.94 billion for 2012 . the ratio of compensation and benefits to net revenues for 2013 was 36.9% ( 36.9 % ) compared with 37.9% ( 37.9 % ) for 2012 . total staff increased 2% ( 2 % ) during 2013 . non-compensation expenses on the consolidated statements of earnings were $ 9.86 billion for 2013 , 2% ( 2 % ) lower than 2012