U.S. banking sector in non-interest income ratio of 35 percent, the industry has been the ROA level is less than 1 percent, while ROE has been no more than 20 percent.

• 美国银行业在非息收入比重在35%25以下时，行业的ROA水平是一直低于1%25，而ROE一直没有超过20%25。