Provide insights showing the total ad spend, breakdown of ad spend by platform, links of advertising campaigns from the past year, total number campaigns per year, percentage of brand's revenue that comes from international national sales, and how the brands advertising efforts and spend has changed over the past five years, for each of the following brands (all of which that are owned by Gap Inc.): Gap, Banana Republic, Athleta, Intermix, Hill City, and Janie & Jack.