( a ) included operating lease income of $ 2.1 billion , $ 1.7 billion and $ 1.5 billion for the years ended december 31 , 2015 , 2014 and 2013 , respectively . 2015 compared with 2014 total net revenue for 2015 was down by 2% ( 2 % ) compared with the prior year , predominantly driven by lower corporate private equity gains , lower cib revenue reflecting the impact of business simplification initiatives , and lower ccb mortgage banking revenue . these decreases were partially offset by a benefit from a legal settlement in corporate , and higher operating lease income , predominantly in ccb . investment banking fees increased from the prior year , reflecting higher advisory fees , partially offset by lower equity and debt underwriting fees . the increase in advisory fees was driven by a greater share of fees for completed transactions as well as growth in industry-wide fee levels . the decrease in equity underwriting fees resulted from lower industry-wide issuance , and the decrease in debt underwriting fees resulted primarily from lower loan syndication and bond underwriting fees on lower industry- wide fee levels . for additional information on investment banking fees , see cib segment results on pages 94 201398 and note 7 . principal transactions revenue decreased from the prior year , reflecting lower private equity gains in corporate driven by lower valuation gains and lower net gains on sales as the firm exits this non-core business . the decrease was partially offset by higher client-driven market-making revenue , particularly in foreign exchange , interest rate and equity-related products in cib , as well as a gain of approximately $ 160 million on ccb 2019s investment in square , inc . upon its initial public offering . for additional information , see cib and corporate segment results on pages 94 201398 and pages 105 2013106 , respectively , and note 7 . asset management , administration and commissions revenue decreased compared with the prior year , largely as a result of lower fees in cib and lower performance fees in am . the decrease was partially offset by higher asset management fees as a result of net client inflows into assets under management and the impact of higher average market levels in am and ccb . for additional information , see the segment discussions of cib and am on pages 94 201398 and pages 102 2013104 , respectively , and note 7 . mortgage fees and related income decreased compared with the prior year , reflecting lower servicing revenue largely as a result of lower average third-party loans serviced , and lower net production revenue reflecting a lower repurchase benefit . for further information on mortgage fees and related income , see the segment discussion of ccb on pages 85 201393 and notes 7 and 17 . for information on lending- and deposit-related fees , see the segment results for ccb on pages 85 201393 , cib on pages 94 201398 , and cb on pages 99 2013101 and note 7 ; securities gains , see the corporate segment discussion on pages 105 2013 106 ; and card income , see ccb segment results on pages 85 201393 . other income was relatively flat compared with the prior year , reflecting a $ 514 million benefit from a legal settlement in corporate , higher operating lease income as a result of growth in auto operating lease assets in ccb , and the absence of losses related to the exit of non-core portfolios in card . these increases were offset by the impact of business simplification in cib ; the absence of a benefit recognized in 2014 from a franchise tax settlement ; and losses related to the accelerated amortization of cash flow hedges associated with the exit of certain non- operating deposits . net interest income was relatively flat compared with the prior year , as lower loan yields , lower investment securities net interest income , and lower trading asset balance and yields were offset by higher average loan balances and lower interest expense on deposits . the firm 2019s average interest-earning assets were $ 2.1 trillion in 2015 , and the net interest yield on these assets , on a fully taxable- equivalent ( 201cfte 201d ) basis , was 2.14% ( 2.14 % ) , a decrease of 4 basis points from the prior year . 2014 compared with 2013 total net revenue for 2014 was down by 2% ( 2 % ) compared with the prior year , predominantly due to lower mortgage fees and related income and lower other income . the decrease was partially offset by higher asset management , administration and commissions revenue . investment banking fees increased compared with the prior year , due to higher advisory and equity underwriting fees , largely offset by lower debt underwriting fees . the increase .
management 2019s discussion and analysis 72 jpmorgan chase & co./2015 annual report consolidated results of operations the following section of the md&a provides a comparative discussion of jpmorgan chase 2019s consolidated results of operations on a reported basis for the three-year period ended december 31 , 2015 . factors that relate primarily to a single business segment are discussed in more detail within that business segment . for a discussion of the critical accounting estimates used by the firm that affect the consolidated results of operations , see pages 165 2013169 . revenue year ended december 31 .
what percentage of total net revenue in 2015 was net interest income?
( in millions ) the net interest income of 2015 is 43510 ; the net interest income of 2014 is 43634 ; the net interest income of 2013 is 43319 ; ( in millions ) the total net revenue of 2015 is $ 93543 ; the total net revenue of 2014 is $ 95112 ; the total net revenue of 2013 is $ 97367 ;
( in millions ) 2015 2014 2013
investment banking fees $ 6751 $ 6542 $ 6354
principal transactions 10408 10531 10141
lending- and deposit-related fees 5694 5801 5945
asset management administration and commissions 15509 15931 15106
securities gains 202 77 667
mortgage fees and related income 2513 3563 5205
card income 5924 6020 6022
other income ( a ) 3032 3013 4608
noninterest revenue 50033 51478 54048
net interest income 43510 43634 43319
total net revenue $ 93543 $ 95112 $ 97367