increased over 4% ( 4 % ) in 2005 , costs for trucking services provided by intermodal carriers remained flat as we substantially reduced expenses associated with network inefficiencies . higher diesel fuel prices increased sales and use taxes in 2005 , which resulted in higher state and local taxes . other contract expenses for equipment maintenance and other services increased in 2005 . the 2005 january west coast storm and hurricanes katrina and rita also contributed to higher expenses in 2005 ( net of insurance settlements received ) . partially offsetting these increases was a reduction in relocation expenses as we incurred higher relocation costs associated with moving support personnel to omaha , nebraska during 2004 . non-operating items millions of dollars 2006 2005 2004 % (  % ) change 2006 v 2005 % (  % ) change 2005 v 2004 .

Table:
millions of dollars | 2006 | 2005 | 2004 | % (  % ) change 2006 v 2005 | % (  % ) change 2005 v 2004
other income | $ 118 | $ 145 | $ 88 | ( 19 ) % (  % ) | 65% ( 65 % )
interest expense | -477 ( 477 ) | -504 ( 504 ) | -527 ( 527 ) | -5 ( 5 ) | -4 ( 4 )
income taxes | -919 ( 919 ) | -410 ( 410 ) | -252 ( 252 ) | 124 | 63
other income 2013 lower net gains from non-operating asset sales and higher expenses due to rising interest rates associated with our sale of receivables program resulted in a reduction in other income in 2006 , which was partially offset by higher rental income for the use of our right-of-way ( including 2006 settlements of rate disputes from prior years ) and cash investment returns due to higher interest rates .
in 2005 , other income increased largely as a result of higher gains from real estate sales partially offset by higher expenses due to rising interest rates associated with our sale of receivables program .
interest expense 2013 lower interest expense in 2006 and 2005 was primarily due to declining weighted-average debt levels of $ 7.1 billion , $ 7.8 billion , and $ 8.1 billion in 2006 , 2005 , and 2004 , respectively .
a higher effective interest rate of 6.7% ( 6.7 % ) in 2006 , compared to 6.5% ( 6.5 % ) in both 2005 and 2004 , partially offset the effects of the declining debt level .
income taxes 2013 income tax expense was $ 509 million higher in 2006 than 2005 .
higher pre-tax income resulted in additional taxes of $ 414 million and $ 118 million of the increase resulted from the one-time reduction in 2005 described below .
our effective tax rate was 36.4% ( 36.4 % ) and 28.6% ( 28.6 % ) in 2006 and 2005 , respectively .
income taxes were greater in 2005 than 2004 due to higher pre-tax income partially offset by a previously reported reduction in income tax expense .
in our quarterly report on form 10-q for the quarter ended june 30 , 2005 , we reported that the corporation analyzed the impact that final settlements of pre-1995 tax years had on previously recorded estimates of deferred tax assets and liabilities .
the completed analysis of the final settlements for pre-1995 tax years , along with internal revenue service examination reports for tax years 1995 through 2002 were considered , among other things , in a review and re-evaluation of the corporation 2019s estimated deferred tax assets and liabilities as of september 30 , 2005 , resulting in an income tax expense reduction of $ 118 million in .

Question: what was the average other income from 2004 to 2006 in millions
Answer: 117
Calculation: add(118, 145), add(#0, 88), divide(#1, const_3)