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:
## Table 0 ##
Applied’s 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’s business and results of operations.
Manufacturing, Raw Materials and Supplies Applied’s 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.
One region accounted for at least 30 percent of total net sales for the Silicon Systems segment for one or more of the past three fiscal years:
## Table 1 ##
Customers in Taiwan accounted for 32 percent, 37 percent and 45 percent of total net sales for Silicon Systems in fiscal 2015, 2014 and 2013, respectively.
Customers in the United States, China and Korea together contributed 47 percent, 47 percent and 37 percent of the total net sales for this segment in fiscal 2015, 2014 and 2013, respectively.
Financial results in the Silicon Systems segment for fiscal 2015 reflected continued wafer fabrication equipment spending in the semiconductor industry.
The increase in new orders and net sales in fiscal 2015 compared to fiscal 2014 primarily reflected increased demand and spending from memory customers, partially offset by lower demand and spending from foundry customers.
Two customers accounted for approximately 41 percent of net sales and three customers accounted for 53 percent of new orders in this segment in fiscal 2015.
Operating income and non-GAAP adjusted operating income for fiscal 2015 increased compared to fiscal 2014, reflecting the increase in net sales, partially offset by changes in product mix and higher research and development expenses.
The increase in new orders and net sales in fiscal 2014 compared to fiscal 2013 primarily reflected increased demand and spending from memory customers, as well as continued demand from foundry customers.
Three customers accounted for approximately 54 percent of net sales and three customers accounted for 75 percent of new orders in this segment in fiscal 2014.
Operating income and non-GAAP adjusted operating income for fiscal 2014 increased compared to fiscal 2013, reflecting the increase in net sales, partially offset by changes in product mix and higher research and development expenses.
Applied Global Services Segment The Applied Global Services segment encompasses integrated solutions to optimize equipment and fab performance and productivity, including spares, upgrades, services, remanufactured earlier generation equipment and factory automation software for semiconductor, display and solar products.
Customer demand for products and services is fulfilled through a global distribution system with trained service engineers located in close proximity to customer sites.
Industry conditions that affected Applied Global Services' sales of spares and services during fiscal 2015 were principally semiconductor manufacturers' wafer starts, as well as utilization rates.
Certain significant measures for each fiscal year were as follows:
## Table 2 ##
Reconciliations of non-GAAP adjusted measures are presented under "Non-GAAP Adjusted Results" below.
There were no individual regions that accounted for at least 30 percent of total net sales for the Applied Global Services segment for any of the past three fiscal years.
estimated $21.025 billion.
This amount may vary depending upon plant availability and fuel costs.
Consumers is obligated to pay capacity charges based upon the amount of capacity available at a given time, whether or not power is delivered to Consumers.
Consumers Gas Utility Gas Utility Operations Consumers’ gas utility operating revenue was $2.621 billion in 2007, $2.374 billion in 2006, and $2.483 billion in 2005.
Consumers’ gas utility operations purchase, transport, store, distribute and sell natural gas.
Consumers is authorized to provide service in 46 of the 68 counties in Michigan’s Lower Peninsula.
Principal cities served include Bay City, Flint, Jackson, Kalamazoo, Lansing, Pontiac and Saginaw, as well as the suburban Detroit area, where nearly 900,000 of Consumers’ gas customers are located.
Consumers’ gas utility operations are not dependent upon a single customer, or even a few customers, and the loss of any one or even a few such customers is not reasonably likely to have a material adverse effect on its financial condition.
Consumers’ gas utility operations are seasonal.
Consumers injects natural gas into storage during the summer months for use during the winter months when the demand for natural gas is higher.
Peak demand occurs in the winter due to colder temperatures and the resulting use of heating fuels.
In 2007, deliveries of natural gas sold through Consumers’ pipeline and distribution network totaled 347 bcf.
Gas Utility Properties: Consumers’ gas distribution and transmission system located throughout Michigan’s Lower Peninsula consists of: ?26,404 miles of distribution mains; ?1,669 miles of transmission lines; ?7 compressor stations with a total of 162,000 installed horsepower; and ?15 gas storage fields with an aggregate storage capacity of 308 bcf and a working storage capacity of 143 bcf.
Gas Supply: In 2007, Consumers purchased 67 percent of the gas it delivered from United States producers and 25 percent from Canadian producers.
Authorized suppliers in the gas customer choice program supplied the remaining 8 percent of gas that Consumers delivered.
Consumers’ firm gas transportation agreements are with ANR Pipeline Company, Great Lakes Gas Transmission, L. P. , Trunkline Gas Co. , Panhandle Eastern Pipe Line Company, and Vector Pipeline.
Consumers uses these agreements to deliver gas to Michigan for ultimate deliveries to market.
Consumers’ firm transportation and city gate arrangements are capable of delivering over ninety percent of Consumers’ total gas supply requirements.
As of December 31, 2007, Consumers’ portfolio of firm transportation from pipelines to Michigan is as follows:

Tables referenced above, in order (Table 0 first):
<table><tr><td></td><td>2015</td><td>2014</td><td></td><td>(In millions, except percentages)</td></tr><tr><td>Silicon Systems</td><td>$1,720</td><td>55%</td><td>$1,400</td><td>48%</td></tr><tr><td>Applied Global Services</td><td>812</td><td>26%</td><td>775</td><td>27%</td></tr><tr><td>Display</td><td>525</td><td>16%</td><td>593</td><td>20%</td></tr><tr><td>Energy and Environmental Solutions</td><td>85</td><td>3%</td><td>149</td><td>5%</td></tr><tr><td>Total</td><td>$3,142</td><td>100%</td><td>$2,917</td><td>100%</td></tr></table>
<table><tr><td></td><td></td><td></td><td></td><td colspan="4">Change</td></tr><tr><td></td><td>2015</td><td>2014</td><td>2013</td><td colspan="2">2015 over 2014</td><td colspan="2">2014 over 2013</td></tr><tr><td></td><td colspan="7">(In millions, except percentages)</td></tr><tr><td>Taiwan</td><td>$1,982</td><td>$2,186</td><td>$2,171</td><td>$-204</td><td>-9%</td><td>$15</td><td>1%</td></tr></table>
<table><tr><td></td><td></td><td></td><td></td><td colspan="4">Change</td></tr><tr><td></td><td>2015</td><td>2014</td><td>2013</td><td colspan="2">2015 over 2014</td><td colspan="2">2014 over 2013</td></tr><tr><td></td><td colspan="7">(In millions, except percentages and ratios)</td></tr><tr><td>New orders</td><td>$2,653</td><td>$2,433</td><td>$2,090</td><td>$220</td><td>9%</td><td>$343</td><td>16%</td></tr><tr><td>Net sales</td><td>2,531</td><td>2,200</td><td>2,023</td><td>331</td><td>15%</td><td>177</td><td>9%</td></tr><tr><td>Book to bill ratio</td><td>1.0</td><td>1.1</td><td>1.0</td><td></td><td></td><td></td><td></td></tr><tr><td>Operating income</td><td>664</td><td>573</td><td>436</td><td>91</td><td>16%</td><td>137</td><td>31%</td></tr><tr><td>Operating margin</td><td>26.2%</td><td>26.0%</td><td>21.6%</td><td></td><td>0.2 points</td><td></td><td>4.4 points</td></tr><tr><td>Non-GAAP Adjusted Results</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Non-GAAP adjusted operating income</td><td>667</td><td>576</td><td>443</td><td>91</td><td>16%</td><td>133</td><td>30%</td></tr><tr><td>Non-GAAP adjusted operating margin</td><td>26.4%</td><td>26.2%</td><td>21.9%</td><td></td><td>0.2 points</td><td></td><td>4.3 points</td></tr></table>

Question: how much percentage has backlog increased from 2014 to 2015
Answer: 0.07713
Reasoning program: subtract(3142,2917), divide(#0,2917)