Advertising includes paid search advertising, search engine optimization, affiliate programs, e-mail marketing, print catalogues and inclusion in online shopping engines.

20172016201520142013
Net advertising spending (MM)$21.1$22.6$20.3$18.5$16.6
Net advertising spending growth-6.9%11.7%9.6%11.2%-21.1%
Net advertising spending % of total revenues6.9%7.4%7.0%6.5%6.5%