administering and litigating product liability claims . litigation defense costs are influenced by a number of factors , including the number and types of cases filed , the number of cases tried annually , the results of trials and appeals , the development of the law controlling relevant legal issues , and litigation strategy and tactics . for further discussion on these matters , see note 18 and item 3 . for the years ended december 31 , 2014 , 2013 and 2012 , product liability defense costs for pm usa were $ 230 million , $ 247 million and $ 228 million , respectively . the factors that have influenced past product liability defense costs are expected to continue to influence future costs . pm usa does not expect future product liability defense costs to be significantly different from product liability defense costs incurred in the last few years . for 2014 , total smokeable products reported shipment volume decreased 2.9% ( 2.9 % ) versus 2013 . pm usa 2019s 2014 reported domestic cigarettes shipment volume decreased 3.0% ( 3.0 % ) , due primarily to the industry 2019s decline , partially offset by retail share gains . when adjusted for trade inventory changes and other factors , pm usa estimates that its 2014 domestic cigarettes shipment volume decreased approximately 3% ( 3 % ) , and that total industry cigarette volumes declined approximately 3.5% ( 3.5 % ) . pm usa 2019s shipments of premium cigarettes accounted for 91.8% ( 91.8 % ) of its reported domestic cigarettes shipment volume for 2014 , versus 92.1% ( 92.1 % ) for 2013 . middleton 2019s reported cigars shipment volume for 2014 increased 6.1% ( 6.1 % ) , driven by black & mild 2019s performance in the tipped cigars segment , including black & mild jazz . marlboro 2019s retail share for 2014 increased 0.1 share point versus 2013 . pm usa grew its total retail share for 2014 by 0.2 share points versus 2013 , driven by marlboro , and l&m in discount , partially offset by share losses on other portfolio brands . in the fourth quarter of 2014 , pm usa expanded distribution of marlboro menthol rich blue to 28 states , primarily in the eastern u.s. , to enhance marlboro 2019s position in the menthol segment . in the machine-made large cigars category , black & mild 2019s retail share for 2014 declined 0.3 share points . in december 2014 , middleton announced the national expansion of black & mild casino , a dark tobacco blend , in the tipped segment . the following discussion compares operating results for the smokeable products segment for the year ended december 31 , 2013 with the year ended december 31 , 2012 . net revenues , which include excise taxes billed to customers , decreased $ 348 million ( 1.6% ( 1.6 % ) ) , due primarily to lower shipment volume ( $ 1046 million ) , partially offset by higher pricing . operating companies income increased $ 824 million ( 13.2% ( 13.2 % ) ) , due primarily to higher pricing ( $ 765 million ) , npm adjustment items ( $ 664 million ) and lower marketing , administration and research costs , partially offset by lower shipment volume ( $ 512 million ) , and higher per unit settlement charges . for 2013 , total smokeable products reported shipment volume decreased 4.1% ( 4.1 % ) versus 2012 . pm usa 2019s 2013 reported domestic cigarettes shipment volume decreased 4.1% ( 4.1 % ) , due primarily to the industry 2019s rate of decline , changes in trade inventories and other factors , partially offset by retail share gains . when adjusted for trade inventories and other factors , pm usa estimated that its 2013 domestic cigarettes shipment volume was down approximately 4% ( 4 % ) , which was consistent with the estimated category decline . pm usa 2019s shipments of premium cigarettes accounted for 92.1% ( 92.1 % ) of its reported domestic cigarettes shipment volume for 2013 , versus 92.7% ( 92.7 % ) for 2012 . middleton 2019s reported cigars shipment volume for 2013 decreased 3.2% ( 3.2 % ) due primarily to changes in wholesale inventories and retail share losses . marlboro 2019s retail share for 2013 increased 0.1 share point versus 2012 behind investments in the marlboro architecture . pm usa expanded marlboro edge distribution nationally in the fourth quarter of 2013 . pm usa 2019s 2013 retail share increased 0.3 share points versus 2012 , due to retail share gains by marlboro , as well as l&m in discount , partially offset by share losses on other portfolio brands . in 2013 , l&m continued to gain retail share as the total discount segment was flat to declining versus 2012 . in the machine-made large cigars category , black & mild 2019s retail share for 2013 decreased 1.0 share point , driven by heightened competitive activity from low-priced cigar brands . smokeless products segment during 2014 , the smokeless products segment grew operating companies income and expanded operating companies income margins . usstc also increased copenhagen and skoal 2019s combined retail share versus 2013 . the following table summarizes smokeless products segment shipment volume performance : shipment volume for the years ended december 31 .

( cans and packs in millions ), shipment volumefor the years ended december 31 , 2014, shipment volumefor the years ended december 31 , 2013, shipment volumefor the years ended december 31 , 2012
copenhagen, 448.6, 426.1, 392.5
skoal, 269.6, 283.8, 288.4
copenhagenandskoal, 718.2, 709.9, 680.9
other, 75.1, 77.6, 82.4
total smokeless products, 793.3, 787.5, 763.3

smokeless products shipment volume includes cans and packs sold , as well as promotional units , but excludes international volume , which is not material to the smokeless products segment . other includes certain usstc and pm usa smokeless products . new types of smokeless products , as well as new packaging configurations of existing smokeless products , may or may not be equivalent to existing mst products on a can-for-can basis . to calculate volumes of cans and packs shipped , one pack of snus , irrespective of the number of pouches in the pack , is assumed to be equivalent to one can of mst . altria_mdc_2014form10k_nolinks_crops.pdf 31 2/25/15 5:56 pm .

Question: what are the npm adjustment items as a percentage of the operating companies income increase?
Program: divide(664, 824)
Answer: 0.80583