pre_text: net sales increased $ 29.9 million , or 6.3% ( 6.3 % ) , due to higher sales volume driven primarily by continuing improvement in the u.s . home products market and the benefit from new product introductions and price increases to help mitigate cumulative raw material cost increases . operating income increased $ 12.6 million , or 20.4% ( 20.4 % ) , due to higher net sales , the benefits from productivity improvements and leveraging sales on our existing fixed cost base . security net sales increased $ 12.8 million , or 2.2% ( 2.2 % ) , due to higher sales volume and price increases to help mitigate cumulative raw material cost increases . these benefits were partially offset by the impact of our exiting of two product lines in our commercial distribution channel . operating income increased $ 5.8 million , or 8.7% ( 8.7 % ) , primarily due to the higher net sales , the benefits from productivity improvements , lower restructuring and other charges ( approximately $ 6 million ) relating to the completion in 2016 of a manufacturing facility relocation , favorable foreign exchange and the related cost savings resulting from the facility relocation . corporate corporate expenses increased by $ 5.7 million mainly due to the impairment of a long lived asset and recognition of an actuarial gain versus an actuarial loss in 2016 and higher defined benefit plan income during 2017 compared to 2016 . ( in millions ) 2017 2016 .
post_text: in future periods the company may record , in the corporate segment , material expense or income associated with actuarial gains and losses arising from periodic remeasurement of our liabilities for defined benefit plans . at a minimum the company will remeasure its defined benefit plan liabilities in the fourth quarter of each year . remeasurements due to plan amendments and settlements may also occur in interim periods during the year . remeasurement of these liabilities attributable to updating our liability discount rates and expected return on assets may , in particular , result in material income or expense recognition . 2016 compared to 2015 total fortune brands net sales net sales increased $ 405.5 million , or 9% ( 9 % ) . the increase was due to higher sales volume primarily from the continuing improvement in u.s . market conditions for home products , the benefit from the acquisitions in our cabinets and plumbing segments and price increases to help mitigate cumulative raw material cost increases and the effect of unfavorable foreign exchange . these benefits were partially offset by unfavorable foreign exchange of approximately $ 27 million and higher sales rebates . cost of products sold cost of products sold increased $ 182.8 million , or 6% ( 6 % ) , due to higher net sales , including the impact of the acquisitions in our cabinets and plumbing segments , partially offset by the benefit of productivity improvements. .
table: <i>(In millions)</i> 2017 2016
table: General and administrative expense $(90.3) $(80.9)
table: Defined benefit plan income 4.2 2.9
table: Defined benefit plan recognition of actuarial gains (losses) 0.5 (1.9)
table: Total Corporate expenses $(85.6) $(79.9)
question: Analyse this data from a financial earnings document. what was the percentage growth in the defined benefit plan income from 2016 to 2017