intermodal 2013 decreased volumes and fuel surcharges reduced freight revenue from intermodal shipments in 2009 versus 2008 . volume from international traffic decreased 24% ( 24 % ) in 2009 compared to 2008 , reflecting economic conditions , continued weak imports from asia , and diversions to non-uprr served ports . additionally , continued weakness in the domestic housing and automotive sectors translated into weak demand in large sectors of the international intermodal market , which also contributed to the volume decline . conversely , domestic traffic increased 8% ( 8 % ) in 2009 compared to 2008 . a new contract with hub group , inc. , which included additional shipments , was executed in the second quarter of 2009 and more than offset the impact of weak market conditions in the second half of 2009 . price increases and fuel surcharges generated higher revenue in 2008 , partially offset by lower volume levels . international traffic declined 11% ( 11 % ) in 2008 , reflecting continued softening of imports from china and the loss of a customer contract . notably , the peak intermodal shipping season , which usually starts in the third quarter , was particularly weak in 2008 . additionally , continued weakness in domestic housing and automotive sectors translated into weak demand in large sectors of the international intermodal market , which also contributed to lower volumes . domestic traffic declined 3% ( 3 % ) in 2008 due to the loss of a customer contract and lower volumes from less-than-truckload shippers . additionally , the flood-related embargo on traffic in the midwest during the second quarter hindered intermodal volume levels in 2008 . mexico business 2013 each of our commodity groups include revenue from shipments to and from mexico . revenue from mexico business decreased 26% ( 26 % ) in 2009 versus 2008 to $ 1.2 billion . volume declined in five of our six commodity groups , down 19% ( 19 % ) in 2009 , driven by 32% ( 32 % ) and 24% ( 24 % ) reductions in industrial products and automotive shipments , respectively . conversely , energy shipments increased 9% ( 9 % ) in 2009 versus 2008 , partially offsetting these declines . revenue from mexico business increased 13% ( 13 % ) to $ 1.6 billion in 2008 compared to 2007 . price improvements and fuel surcharges contributed to these increases , partially offset by a 4% ( 4 % ) decline in volume in 2008 compared to 2007 . operating expenses millions of dollars 2009 2008 2007 % (  % ) change 2009 v 2008 % (  % ) change 2008 v 2007 .

Table:
millions of dollars | 2009 | 2008 | 2007 | % (  % ) change 2009 v 2008 | % (  % ) change 2008 v 2007
compensation and benefits | $ 4063 | $ 4457 | $ 4526 | ( 9 ) % (  % ) | ( 2 ) % (  % )
fuel | 1763 | 3983 | 3104 | -56 ( 56 ) | 28
purchased services and materials | 1614 | 1902 | 1856 | -15 ( 15 ) | 2
depreciation | 1444 | 1387 | 1321 | 4 | 5
equipment and other rents | 1180 | 1326 | 1368 | -11 ( 11 ) | -3 ( 3 )
other | 687 | 840 | 733 | -18 ( 18 ) | 15
total | $ 10751 | $ 13895 | $ 12908 | ( 23 ) % (  % ) | 8% ( 8 % )
2009 intermodal revenue international domestic .

Question: what was the average yearly decline in international traffic in 2008 and in 2009?
Answer: 17.5%
Calculation: add(11%, 24%), divide(#0, const_2)