{"pre_text": ["backlog applied manufactures systems to meet demand represented by order backlog and customer commitments .", "backlog consists of : ( 1 ) orders for which written authorizations have been accepted and assigned shipment dates are within the next 12 months , or shipment has occurred but revenue has not been recognized ; and ( 2 ) contractual service revenue and maintenance fees to be earned within the next 12 months .", "backlog by reportable segment as of october 25 , 2015 and october 26 , 2014 was as follows : 2015 2014 ( in millions , except percentages ) ."], "post_text": ["applied 2019s backlog on any particular date is not necessarily indicative of actual sales for any future periods , due to the potential for customer changes in delivery schedules or order cancellations .", "customers may delay delivery of products or cancel orders prior to shipment , subject to possible cancellation penalties .", "delays in delivery schedules or a reduction of backlog during any particular period could have a material adverse effect on applied 2019s business and results of operations .", "manufacturing , raw materials and supplies applied 2019s manufacturing activities consist primarily of assembly , test and integration of various proprietary and commercial parts , components and subassemblies that are used to manufacture systems .", "applied has implemented a distributed manufacturing model under which manufacturing and supply chain activities are conducted in various countries , including germany , israel , italy , singapore , taiwan , the united states and other countries in asia .", "applied uses numerous vendors , including contract manufacturers , to supply parts and assembly services for the manufacture and support of its products , including some systems being completed at customer sites .", "although applied makes reasonable efforts to assure that parts are available from multiple qualified suppliers , this is not always possible .", "accordingly , some key parts may be obtained from only a single supplier or a limited group of suppliers .", "applied seeks to reduce costs and to lower the risks of manufacturing and service interruptions by selecting and qualifying alternate suppliers for key parts ; monitoring the financial condition of key suppliers ; maintaining appropriate inventories of key parts ; qualifying new parts on a timely basis ; and ensuring quality and performance of parts. ."], "table": [["", "2015", "2014", "", "( in millions except percentages )"], ["silicon systems", "$ 1720", "55% ( 55 % )", "$ 1400", "48% ( 48 % )"], ["applied global services", "812", "26% ( 26 % )", "775", "27% ( 27 % )"], ["display", "525", "16% ( 16 % )", "593", "20% ( 20 % )"], ["energy and environmental solutions", "85", "3% ( 3 % )", "149", "5% ( 5 % )"], ["total", "$ 3142", "100% ( 100 % )", "$ 2917", "100% ( 100 % )"]], "table_ori": [["", "2015", "2014", "", "(In millions, except percentages)"], ["Silicon Systems", "$1,720", "55%", "$1,400", "48%"], ["Applied Global Services", "812", "26%", "775", "27%"], ["Display", "525", "16%", "593", "20%"], ["Energy and Environmental Solutions", "85", "3%", "149", "5%"], ["Total", "$3,142", "100%", "$2,917", "100%"]]}

Question: how much percentage has backlog increased from 2014 to 2015
Evidence:
table_5: the total of 2015 is $ 3142 ; the total of 2014 is 100% ( 100 % ) ; the total of is $ 2917 ; the total of ( in millions except percentages ) is 100% ( 100 % ) ;
text_1: backlog consists of : ( 1 ) orders for which written authorizations have been accepted and assigned shipment dates are within the next 12 months , or shipment has occurred but revenue has not been recognized ; and ( 2 ) contractual service revenue and maintenance fees to be earned within the next 12 months .
text_2: backlog by reportable segment as of october 25 , 2015 and october 26 , 2014 was as follows : 2015 2014 ( in millions , except percentages ) .
Program: subtract(3142, 2917), divide(#0, 2917)
Answer:
str_answer: 7.7%
exe_answer: 0.07713