concession-based shop-within-shops . in addition , we sell our products online through various third-party digital partner commerce sites . in asia , our wholesale business is comprised primarily of sales to department stores , with related products distributed through shop-within-shops . no operating segments were aggregated to form our reportable segments . in addition to these reportable segments , we also have other non-reportable segments , representing approximately 7% ( 7 % ) of our fiscal 2018 net revenues , which primarily consist of ( i ) sales of club monaco branded products made through our retail businesses in the u.s. , canada , and europe , and our licensing alliances in europe and asia , ( ii ) sales of ralph lauren branded products made through our wholesale business in latin america , and ( iii ) royalty revenues earned through our global licensing alliances , excluding club monaco . this segment structure is consistent with how we establish our overall business strategy , allocate resources , and assess performance of our company . approximately 45% ( 45 % ) of our fiscal 2018 net revenues were earned outside of the u.s . see note 19 to the accompanying consolidated financial statements for a summary of net revenues and operating income by segment , as well as net revenues and long-lived assets by geographic location . our wholesale business our wholesale business sells our products globally to leading upscale and certain mid-tier department stores , specialty stores , and golf and pro shops . we have continued to focus on elevating our brand by improving in-store product assortment and presentation , as well as full-price sell-throughs to consumers . as of the end of fiscal 2018 , our wholesale products were sold through over 12000 doors worldwide , with the majority in specialty stores . our products are also increasingly being sold through the digital commerce sites of many of our wholesale customers . the primary product offerings sold through our wholesale channels of distribution include apparel , accessories , and home furnishings . our luxury brands , including ralph lauren collection and ralph lauren purple label , are distributed worldwide through a limited number of premier fashion retailers . in north america , our wholesale business is comprised primarily of sales to department stores , and to a lesser extent , specialty stores . in europe , our wholesale business is comprised of a varying mix of sales to both department stores and specialty stores , depending on the country . in asia , our wholesale business is comprised primarily of sales to department stores , with related products distributed through shop-within-shops . we also distribute our wholesale products to certain licensed stores operated by our partners in latin america , asia , europe , and the middle east . we sell the majority of our excess and out-of-season products through secondary distribution channels worldwide , including our retail factory stores . worldwide wholesale distribution channels the following table presents by segment the number of wholesale doors in our primary channels of distribution as of march 31 , 2018 and april 1 , march 31 , april 1 .
what percentage of wholesale distribution channels are due to europe as of march 31 , 2018?
we have three key wholesale customers that generate significant sales volume . during fiscal 2018 , sales to our largest wholesale customer , macy's , inc . ( "macy's" ) , accounted for approximately 8% ( 8 % ) of our total net revenues . further , during fiscal 2018 , sales to our three largest wholesale customers , including macy's , accounted for approximately 19% ( 19 % ) of our total net revenues , as compared to approximately 21% ( 21 % ) during fiscal 2017 . substantially all sales to our three largest wholesale customers related to our north america segment . our products are sold primarily by our own sales forces . our wholesale business maintains its primary showrooms in new york city . in addition , we maintain regional showrooms in bologna , geneva , london , madrid , munich , panama , paris , and stockholm. .