pre_text: Selling, General and Administrative The increase in selling, general and administrative in fiscal 2019 compared to fiscal 2018 was primarily due to higher variable costs on increased sales volumes, primarily related to increases in headcount costs and employee incentive compensation, as well as additional costs from the FRT acquisition, offset partially by a decrease in the amortization of intangible assets.
table: Fiscal Year Ended
table: December 28, 2019 December 29, 2018 $ Change % Change
table: (Dollars in thousands)
table: Selling, general and administrative $106,335 $99,254 $7,081 7.1 %
table: % of revenues 18.0 % 18.7 %
table: Fiscal Year Ended
table: December 29, 2018 December 30, 2017 $ Change % Change
table: (Dollars in thousands)
table: Selling, general and administrative $99,254 $95,489 $3,765 3.9 %
table: % of revenues 18.7 % 17.4 %
question: Analyse this data from a financial earnings document. What is the average Selling, general and administrative for the Fiscal Year Ended December 28, 2019 to December 29, 2018?