{"pre_text": ["aircraft fuel our operations and financial results are significantly affected by the availability and price of jet fuel .", "based on our 2014 forecasted mainline and regional fuel consumption , we estimate that as of december 31 , 2013 , a $ 1 per barrel increase in the price of crude oil would increase our 2014 annual fuel expense by $ 104 million ( excluding the effect of our hedges ) , and by $ 87 million ( taking into account such hedges ) .", "the following table shows annual aircraft fuel consumption and costs , including taxes , for american , it's third-party regional carriers and american eagle , for 2011 through 2013 .", "aag's consolidated fuel requirements in 2014 are expected to increase significantly to approximately 4.4 billion gallons as a result of a full year of us airways operations .", "gallons consumed ( in millions ) average cost per gallon total cost ( in millions ) percent of total operating expenses ."], "post_text": ["total fuel expenses for american eagle and american's third-party regional carriers operating under capacity purchase agreements for the years ended december 31 , 2013 , 2012 and 2011 were $ 1.1 billion , $ 1.0 billion and $ 946 million , respectively .", "in order to provide a measure of control over price and supply , we trade and ship fuel and maintain fuel storage facilities to support our flight operations .", "prior to the effective date , we from time to time entered into hedging contracts , which consist primarily of call options , collars ( consisting of a purchased call option and a sold put option ) and call spreads ( consisting of a purchased call option and a sold call option ) .", "heating oil , jet fuel and crude oil are the primary underlying commodities in the hedge portfolio .", "depending on movements in the price of fuel , our fuel hedging can result in gains or losses on its fuel hedges .", "for more discussion see part i , item 1a .", "risk factors - \" our business is dependent on the price and availability of aircraft fuel .", "continued periods of high volatility in fuel costs , increased fuel prices and significant disruptions in the supply of aircraft fuel could have a significant negative impact on our operating results and liquidity.\" as of january 2014 , we had hedges covering approximately 19% ( 19 % ) of estimated consolidated aag ( including the estimated fuel requirements of us airways ) 2014 fuel requirements .", "the consumption hedged for 2014 is capped at an average price of approximately $ 2.91 per gallon of jet fuel .", "one percent of our estimated 2014 fuel requirement is hedged using call spreads with protection capped at an average price of approximately $ 3.18 per gallon of jet fuel .", "eighteen percent of our estimated 2014 fuel requirement is hedged using collars with an average floor price of approximately $ 2.62 per gallon of jet fuel .", "the cap and floor prices exclude taxes and transportation costs .", "we have not entered into any fuel hedges since the effective date and our current policy is not to do so .", "see part ii , item 7 .", "management 2019s discussion and analysis of financial condition and results of operations , item 7 ( a ) .", "quantitative and qualitative disclosures about market risk , note 10 to aag's consolidated financial statements in item 8a and note 9 to american's consolidated financial statements in item 8b .", "fuel prices have fluctuated substantially over the past several years .", "we cannot predict the future availability , price volatility or cost of aircraft fuel .", "natural disasters , political disruptions or wars involving oil-producing countries , changes in fuel-related governmental policy , the strength of the u.s .", "dollar against foreign currencies , changes in access to petroleum product pipelines and terminals , speculation in the energy futures markets , changes in aircraft fuel production capacity , environmental concerns and other unpredictable events may result in fuel supply shortages , additional fuel price volatility and cost increases in the future .", "see part i , item 1a .", "risk factors - \" our business is dependent on the price and availability of aircraft fuel .", "continued periods of high volatility in fuel costs , increased fuel prices and significant disruptions in the supply of aircraft fuel could have a significant negative impact on our operating results and liquidity.\" insurance we maintain insurance of the types that we believe are customary in the airline industry , including insurance for public liability , passenger liability , property damage , and all-risk coverage for damage to its aircraft .", "principal coverage includes liability for injury to members of the public , including passengers , damage to property of aag , its subsidiaries and others , and loss of or damage to flight equipment , whether on the ground or in flight .", "we also maintain other types of insurance such as workers 2019 compensation and employer 2019s liability , with limits and deductibles that we believe are standard within the industry .", "since september 11 , 2001 , we and other airlines have been unable to obtain coverage for liability to persons other than employees and passengers for claims resulting from acts of terrorism , war or similar events , which is called war risk coverage , at reasonable rates from the commercial insurance market .", "we , therefore , purchased our war risk coverage through a special program administered by the faa , as have most other u.s .", "airlines .", "this program , which currently expires september 30 , 2014 ."], "table": [["year", "gallons consumed ( in millions )", "average costper gallon", "total cost ( in millions )", "percent of total operating expenses"], ["2011", "2756", "$ 3.01", "$ 8304", "33.2% ( 33.2 % )"], ["2012", "2723", "$ 3.20", "$ 8717", "35.3% ( 35.3 % )"], ["2013", "2806", "$ 3.09", "$ 8959", "35.3% ( 35.3 % )"]], "table_ori": [["Year", "Gallons Consumed(in millions)", "Average CostPer Gallon", "Total Cost(in millions)", "Percent of Total Operating Expenses"], ["2011", "2,756", "$3.01", "$8,304", "33.2%"], ["2012", "2,723", "$3.20", "$8,717", "35.3%"], ["2013", "2,806", "$3.09", "$8,959", "35.3%"]]}

Question: what is the percentage change in total cost of aircraft fuel in 2013?
Evidence:
table_2: year the 2012 of gallons consumed ( in millions ) is 2723 ; the 2012 of average costper gallon is $ 3.20 ; the 2012 of total cost ( in millions ) is $ 8717 ; the 2012 of percent of total operating expenses is 35.3% ( 35.3 % ) ;
table_3: year the 2013 of gallons consumed ( in millions ) is 2806 ; the 2013 of average costper gallon is $ 3.09 ; the 2013 of total cost ( in millions ) is $ 8959 ; the 2013 of percent of total operating expenses is 35.3% ( 35.3 % ) ;
Program: subtract(8959, 8717), divide(#0, 8717)
Answer:
str_answer: 2.8%
exe_answer: 0.02776