pre_text: restructuring and other charges 2014restructuring and other charges for each year in the three-year period ended december 31 , 2015 were comprised of the following: .
post_text: layoff costs were recorded based on approved detailed action plans submitted by the operating locations that specified positions to be eliminated , benefits to be paid under existing severance plans , union contracts or statutory requirements , and the expected timetable for completion of the plans . 2015 actions . in 2015 , alcoa recorded restructuring and other charges of $ 1195 ( $ 836 after-tax and noncontrolling interest ) , which were comprised of the following components : $ 438 ( $ 281 after-tax and noncontrolling interest ) for exit costs related to decisions to permanently shut down and demolish three smelters and a power station ( see below ) ; $ 246 ( $ 118 after-tax and noncontrolling interest ) for the curtailment of two refineries and two smelters ( see below ) ; $ 201 ( pre- and after-tax ) related to legal matters in italy ; a $ 161 ( $ 151 after-tax and noncontrolling interest ) net loss related to the march 2015 divestiture of a rolling mill in russia ( see global rolled products in segment information below ) and post-closing adjustments associated with three december 2014 divestitures ; $ 143 ( $ 102 after-tax and noncontrolling interest ) for layoff costs , including the separation of approximately 2100 employees ( 425 in the transportation and construction solutions segment , 645 in the engineered products and solutions segment , 380 in the primary metals segment , 90 in the global rolled products segment , 85 in the alumina segment , and 475 in corporate ) ; $ 34 ( $ 14 after-tax and noncontrolling interest ) for asset impairments , virtually all of which was related to prior capitalized costs for an expansion project at a refinery in australia that is no longer being pursued ; an $ 18 ( $ 13 after- tax ) gain on the sale of land related to one of the rolling mills in australia that was permanently closed in december 2014 ( see 2014 actions below ) ; a net charge of $ 4 ( a net credit of $ 7 after-tax and noncontrolling interest ) for other miscellaneous items ; and $ 14 ( $ 11 after-tax and noncontrolling interest ) for the reversal of a number of small layoff reserves related to prior periods . during 2015 , management initiated various alumina refining and aluminum smelting capacity curtailments and/or closures . the curtailments were composed of the remaining capacity at all of the following : the s e3o lu eds smelter in brazil ( 74 kmt-per-year ) ; the suriname refinery ( 1330 kmt-per-year ) ; the point comfort , tx refinery ( 2010 kmt-per- year ) ; and the wenatchee , wa smelter ( 143 kmt-per-year ) . all of the curtailments were completed in 2015 except for 1635 kmt-per-year at the point comfort refinery , which is expected to be completed by the end of june 2016 . the permanent closures were composed of the capacity at the warrick , in smelter ( 269 kmt-per-year ) ( includes the closure of a related coal mine ) and the infrastructure of the massena east , ny smelter ( potlines were previously shut down in both 2013 and 2014 2014see 2013 actions and 2014 actions below ) , as the modernization of this smelter is no longer being pursued . the shutdown of the warrick smelter is expected to be completed by the end of march 2016 . the decisions on the above actions were part of a separate 12-month review in refining ( 2800 kmt-per-year ) and smelting ( 500 kmt-per-year ) capacity initiated by management in march 2015 for possible curtailment ( partial or full ) , permanent closure or divestiture . while many factors contributed to each decision , in general , these actions were initiated to maintain competitiveness amid prevailing market conditions for both alumina and aluminum . demolition and remediation activities related to the warrick smelter and the massena east location will begin in 2016 and are expected to be completed by the end of 2020 . separate from the actions initiated under the reviews described above , in mid-2015 , management approved the permanent shutdown and demolition of the po e7os de caldas smelter ( capacity of 96 kmt-per-year ) in brazil and the .
table: 2015 2014 2013
table: Asset impairments $335 $406 $116
table: Layoff costs 299 259 201
table: Legal matters in Italy 201 - -
table: Net loss on divestitures of businesses 161 332 -
table: Resolution of a legal matter - - 391
table: Other 213 199 82
table: Reversals of previously recorded layoff and other exit costs (14) (28) (8)
table: Restructuring and other charges $1,195 $1,168 $782
question: Analyse this data from a financial earnings document. what is the percentual growth observed in the percentage of asset impairment costs concerning the restructuring and other charges costs during 2013 and 2014?