december 2016 acquisition of camber and higher volumes in fleet support and oil and gas services , partially offset by lower nuclear and environmental volumes due to the resolution in 2016 of outstanding contract changes on a nuclear and environmental commercial contract . segment operating income 2018 - operating income in the technical solutions segment for the year ended december 31 , 2018 , was $ 32 million , compared to operating income of $ 21 million in 2017 . the increase was primarily due to an allowance for accounts receivable in 2017 on a nuclear and environmental commercial contract and higher income from operating investments at our nuclear and environmental joint ventures , partially offset by one time employee bonus payments in 2018 related to the tax act and lower performance in fleet support services . 2017 - operating income in the technical solutions segment for the year ended december 31 , 2017 , was $ 21 million , compared to operating income of $ 8 million in 2016 . the increase was primarily due to improved performance in oil and gas services and higher volume in mdis services following the december 2016 acquisition of camber , partially offset by the establishment of an allowance for accounts receivable on a nuclear and environmental commercial contract in 2017 and the resolution in 2016 of outstanding contract changes on a nuclear and environmental commercial contract . backlog total backlog as of december 31 , 2018 , was approximately $ 23 billion . total backlog includes both funded backlog ( firm orders for which funding is contractually obligated by the customer ) and unfunded backlog ( firm orders for which funding is not currently contractually obligated by the customer ) . backlog excludes unexercised contract options and unfunded idiq orders . for contracts having no stated contract values , backlog includes only the amounts committed by the customer . the following table presents funded and unfunded backlog by segment as of december 31 , 2018 and 2017: .

december 31 2018 funded (1): ingalls: 9943
newport news: 6767
technical solutions: 339
total backlog: 17049
december 31 2018 unfunded (1): ingalls: 1422
newport news: 4144
technical solutions: 380
total backlog: 5946
december 31 2018 total backlog: ingalls: 11365
newport news: 10911
technical solutions: 719
total backlog: 22995
december 31 2018 funded (2): ingalls: 5920
newport news: 6976
technical solutions: 478
total backlog: 13374
december 31 2018 unfunded (2): ingalls: 2071
newport news: 5608
technical solutions: 314
total backlog: 7993
total backlog: ingalls: 7991
newport news: 12584
technical solutions: 792
total backlog: 21367

we expect approximately 30% ( 30 % ) of the $ 23 billion total backlog as of december 31 , 2018 , to be converted into sales in 2019 . u.s . government orders comprised substantially all of the backlog as of december 31 , 2018 and 2017 . awards 2018 - the value of new contract awards during the year ended december 31 , 2018 , was approximately $ 9.8 billion . significant new awards during the period included contracts for the construction of three arleigh burke class ( ddg 51 ) destroyers , for the detail design and construction of richard m . mccool jr . ( lpd 29 ) , for procurement of long-lead-time material for enterprise ( cvn 80 ) , and for the construction of nsc 10 ( unnamed ) and nsc 11 ( unnamed ) . in addition , we received awards in 2019 valued at $ 15.2 billion for detail design and construction of the gerald r . ford class ( cvn 78 ) aircraft carriers enterprise ( cvn 80 ) and cvn 81 ( unnamed ) . 2017 - the value of new contract awards during the year ended december 31 , 2017 , was approximately $ 8.1 billion . significant new awards during this period included the detailed design and construction contract for bougainville ( lha 8 ) and the execution contract for the rcoh of uss george washington ( cvn 73 ) . .

Questions:
what was the operating income in 2017?
how much did this change from 2016?
and the percentage increase during this time?
between 2017 and 2018 what was the difference in operating income for the technical solutions segment?
and the growth rate during this time?

Answers:
21
13
162.5%
11
52.4%