consolidated income statement review our consolidated income statement is presented in item 8 of this report . net income for 2008 was $ 882 million and for 2007 was $ 1.467 billion . total revenue for 2008 increased 7% ( 7 % ) compared with 2007 . we created positive operating leverage in the year-to-date comparison as total noninterest expense increased 3% ( 3 % ) in the comparison . net interest income and net interest margin year ended december 31 dollars in millions 2008 2007 .

2008: net interest income: 3823
net interest margin: -3.37
2007: net interest income: 2915
net interest margin: -3

changes in net interest income and margin result from the interaction of the volume and composition of interest-earning assets and related yields , interest-bearing liabilities and related rates paid , and noninterest-bearing sources of funding . see statistical information 2013 analysis of year-to-year changes in net interest ( unaudited ) income and average consolidated balance sheet and net interest analysis in item 8 of this report for additional information . the 31% ( 31 % ) increase in net interest income for 2008 compared with 2007 was favorably impacted by the $ 16.5 billion , or 17% ( 17 % ) , increase in average interest-earning assets and a decrease in funding costs . the 2008 net interest margin was positively affected by declining rates paid on deposits and borrowings compared with the prior year . the reasons driving the higher interest-earning assets in these comparisons are further discussed in the balance sheet highlights portion of the executive summary section of this item 7 . the net interest margin was 3.37% ( 3.37 % ) for 2008 and 3.00% ( 3.00 % ) for 2007 . the following factors impacted the comparison : 2022 a decrease in the rate paid on interest-bearing liabilities of 140 basis points . the rate paid on interest-bearing deposits , the single largest component , decreased 123 basis points . 2022 these factors were partially offset by a 77 basis point decrease in the yield on interest-earning assets . the yield on loans , the single largest component , decreased 109 basis points . 2022 in addition , the impact of noninterest-bearing sources of funding decreased 26 basis points due to lower interest rates and a lower proportion of noninterest- bearing sources of funding to interest-earning assets . for comparing to the broader market , during 2008 the average federal funds rate was 1.94% ( 1.94 % ) compared with 5.03% ( 5.03 % ) for 2007 . we expect our full-year 2009 net interest income to benefit from the impact of interest accretion of discounts resulting from purchase accounting marks and deposit pricing alignment related to our national city acquisition . we also currently expect our 2009 net interest margin to improve on a year-over-year basis . noninterest income summary noninterest income was $ 3.367 billion for 2008 and $ 3.790 billion for 2007 . noninterest income for 2008 included the following : 2022 gains of $ 246 million related to the mark-to-market adjustment on our blackrock ltip shares obligation , 2022 losses related to our commercial mortgage loans held for sale of $ 197 million , net of hedges , 2022 impairment and other losses related to alternative investments of $ 179 million , 2022 income from hilliard lyons totaling $ 164 million , including the first quarter gain of $ 114 million from the sale of this business , 2022 net securities losses of $ 206 million , 2022 a first quarter gain of $ 95 million related to the redemption of a portion of our visa class b common shares related to visa 2019s march 2008 initial public offering , 2022 a third quarter $ 61 million reversal of a legal contingency reserve established in connection with an acquisition due to a settlement , 2022 trading losses of $ 55 million , 2022 a $ 35 million impairment charge on commercial mortgage servicing rights , and 2022 equity management losses of $ 24 million . noninterest income for 2007 included the following : 2022 the impact of $ 82 million gain recognized in connection with our transfer of blackrock shares to satisfy a portion of pnc 2019s ltip obligation and a $ 209 million net loss on our ltip shares obligation , 2022 income from hilliard lyons totaling $ 227 million , 2022 trading income of $ 104 million , 2022 equity management gains of $ 102 million , and 2022 gains related to our commercial mortgage loans held for sale of $ 3 million , net of hedges . apart from the impact of these items , noninterest income increased $ 16 million in 2008 compared with 2007 . additional analysis fund servicing fees increased $ 69 million in 2008 , to $ 904 million , compared with $ 835 million in 2007 . the impact of the december 2007 acquisition of albridge solutions inc . ( 201calbridge solutions 201d ) and growth in global investment servicing 2019s offshore operations were the primary drivers of this increase . global investment servicing provided fund accounting/ administration services for $ 839 billion of net fund investment assets and provided custody services for $ 379 billion of fund .

Questions:
what is the sum of net interest margin in 2007 and 2008?
what is the average value per year?

Answers:
6.4
3.2