of our efforts to improve connections with GOL and Aeroméxico. GOL and Aeroméxico contributed a significant portion of the traffic from the U.S. to Brazil and into key Mexico markets, respectively. Despite these contributions, Latin America unit revenues declined 2% as a result of the capacity increase, some business demand weakness associated with the FIFA World Cup in Brazil and economic concerns in Venezuela. Atlantic unit revenue increased 2% driven by yield improvements. While our joint venture with Virgin Atlantic reflected solid revenue growth, especially in London-Heathrow, Atlantic yields experienced pressure from the impact of geopolitical and health concerns related to service to Africa, the Middle East, and Russia. Our Pacific region experienced a 4% decline in unit revenues driven by lower yield, primarily due to the weakening of the Japanese yen.  

 

Other Revenue. Other revenue increased $ 580 million , or 15% , primarily due to an increase in sales of SkyMiles, settlements associated with our transatlantic joint venture agreements and sales of non-jet fuel products to third parties by our oil refinery.  



Operating Expense  

 

Fuel Expense. Compared to the prior year, consolidated fuel expense increased $2.0 billion due to unfavorable MTM adjustments on fuel hedges resulting from the significant decrease in crude oil prices during the year (from a high of $115 per barrel in June to a low of $57 per barrel at December 31, 2014) and a 2% increase in consumption, partially offset by an 8% decrease in fuel market price per gallon and increased profitability at Monroe. The table below presents fuel expense, gallons consumed and average price per gallon, including the impact of hedging and the refinery. 

 

The table below shows the impact of hedging and the refinery on fuel expense and average price per gallon, adjusted.

Fuel Purchase Cost. Fuel purchase cost is based on the market price for jet fuel at airport locations.  

 

Airline Segment Fuel Hedge Impact and MTM Adjustments. During the year ended December 31, 2014 , our airline segment fuel hedge loss of $2.3 billion resulted from unfavorable MTM adjustments. These MTM adjustments are based on market prices as of the end of the reporting period for contracts settling in future periods. Such market prices are not necessarily indicative of the actual future value of the underlying hedge in the contract settlement period. The MTM adjustments are reflected in the table above to calculate an effective fuel cost for the period.  

 

Refinery Segment Impact. The refinery results include the impact on fuel expense of self-supply from the production of the refinery and from refined products exchanged with certain counterparties. To the extent that we account for exchanges of refined products as nonmonetary transactions, we include the results of those transactions within fuel expense. For additional information regarding the refinery segment impact, see "Refinery Segment" below.  

 

We adjust fuel expense for the items noted above to arrive at a more meaningful measure of fuel cost. Our average price per gallon, adjusted (a non-GAAP financial measure) was $2.87 for the