Barnes & Noble ad spend 2014-2019

The source provides the following information: "The Company receives payments and credits from vendors pursuant to co-operative advertising and other programs, including payments for product placement in stores, catalogs and online. In accordance with ASC 605-50-25-10, Customer’s Accounting for Certain Consideration Received from a Vendor , the Company classifies certain co-op advertising received as a reduction in costs of sales and occupancy. Allowances received from vendors exceeded gross advertising costs in each of the fiscal years noted above."
Barnes and Nobles uses the following periods as to measure past financial results:
FY 2018: May 1, 2017 to April 28, 2018
FY 2017: May 1, 2016 to April 29, 2017
FY 2016: May 3, 2015 to April 30, 2016
FY 2015 May 4, 2014 to May 2, 2015
FY 2014: April 28, 2013 to May 3, 2014