operating expenses millions 2012 2011 2010 % (  % ) change 2012 v 2011 % (  % ) change 2011 v 2010 .

Table:
millions | 2012 | 2011 | 2010 | % (  % ) change 2012 v 2011 | % (  % ) change 2011 v 2010
compensation and benefits | $ 4685 | $ 4681 | $ 4314 | -% ( - % ) | 9% ( 9 % )
fuel | 3608 | 3581 | 2486 | 1 | 44
purchased services and materials | 2143 | 2005 | 1836 | 7 | 9
depreciation | 1760 | 1617 | 1487 | 9 | 9
equipment and other rents | 1197 | 1167 | 1142 | 3 | 2
other | 788 | 782 | 719 | 1 | 9
total | $ 14181 | $ 13833 | $ 11984 | 3% ( 3 % ) | 15% ( 15 % )
operating expenses increased $ 348 million in 2012 versus 2011 .
depreciation , wage and benefit inflation , higher fuel prices and volume- related trucking services purchased by our logistics subsidiaries , contributed to higher expenses during the year .
efficiency gains , volume related fuel savings ( 2% ( 2 % ) fewer gallons of fuel consumed ) and $ 38 million of weather related expenses in 2011 , which favorably affects the comparison , partially offset the cost increase .
operating expenses increased $ 1.8 billion in 2011 versus 2010 .
our fuel price per gallon rose 36% ( 36 % ) during 2011 , accounting for $ 922 million of the increase .
wage and benefit inflation , volume-related costs , depreciation , and property taxes also contributed to higher expenses .
expenses increased $ 20 million for costs related to the flooding in the midwest and $ 18 million due to the impact of severe heat and drought in the south , primarily texas .
cost savings from productivity improvements and better resource utilization partially offset these increases .
a $ 45 million one-time payment relating to a transaction with csx intermodal , inc ( csxi ) increased operating expenses during the first quarter of 2010 , which favorably affects the comparison of operating expenses in 2011 to those in 2010 .
compensation and benefits 2013 compensation and benefits include wages , payroll taxes , health and welfare costs , pension costs , other postretirement benefits , and incentive costs .
expenses in 2012 were essentially flat versus 2011 as operational improvements and cost reductions offset general wage and benefit inflation and higher pension and other postretirement benefits .
in addition , weather related costs increased these expenses in 2011 .
a combination of general wage and benefit inflation , volume-related expenses , higher training costs associated with new hires , additional crew costs due to speed restrictions caused by the midwest flooding and heat and drought in the south , and higher pension expense drove the increase during 2011 compared to 2010 .
fuel 2013 fuel includes locomotive fuel and gasoline for highway and non-highway vehicles and heavy equipment .
higher locomotive diesel fuel prices , which averaged $ 3.22 per gallon ( including taxes and transportation costs ) in 2012 , compared to $ 3.12 in 2011 , increased expenses by $ 105 million .
volume , as measured by gross ton-miles , decreased 2% ( 2 % ) in 2012 versus 2011 , driving expense down .
the fuel consumption rate was flat year-over-year .
higher locomotive diesel fuel prices , which averaged $ 3.12 ( including taxes and transportation costs ) in 2011 , compared to $ 2.29 per gallon in 2010 , increased expenses by $ 922 million .
in addition , higher gasoline prices for highway and non-highway vehicles also increased year-over-year .
volume , as measured by gross ton-miles , increased 5% ( 5 % ) in 2011 versus 2010 , driving expense up by $ 122 million .
purchased services and materials 2013 expense for purchased services and materials includes the costs of services purchased from outside contractors and other service providers ( including equipment 2012 operating expenses .

Question: what percentage of total operating expenses was purchased services and materials in 2011?
Answer: 15%
Calculation: divide(2005, 13833)