Duty-free shops (or stores) are retail outlets that are exempt from the payment of certain local or national taxes and duties, on the requirement that the goods sold will be sold to travelers who will take them out of the country. Which products can be sold duty-free vary by jurisdiction, as well as how they can be sold, and the process of calculating the duty or refund the duty component.However, some countries impose duty on goods brought into the country, though they had been bought duty-free in another country, or when the value or quantity of such goods exceed an allowed limit. Duty-free shops are often found in the international zone of international airports, sea ports, and train stations but goods can be also bought duty-free on board airplanes and passenger ships. They are not as commonly available for road or train travelers, although several border crossings between the United States and both Canada and Mexico have duty-free shops for car travelers. In some countries, any shop can participate in a reimbursement system, such as Global Blue where a sum equivalent to the tax is paid, but then the goods are presented to the customs and the sum reimbursed on exit.These outlets were abolished for intra-EU travellers in 1999, but are retained for travelers whose final destination is outside the EU. They also sell to intra-EU travelers but with appropriate taxes. Some special member state territories such as Åland, Livigno and the Canary Islands, are within the EU but outside the EU tax union, and thus still continue duty-free sales for all travelers.Tax Free World Association (TFWA) announced that in 2011 Asia-Pacific, with 35 percent of global duty-free and travel retail sales, beat Europe and Americas, with these regions accounting for 34 percent and 23 percent respectively. 31 percent of sales came from the fragrances and cosmetics category, followed by the wine and spirit category with 17 percent and then comes tobacco products.The world's largest airport duty free by sales is Dubai Duty Free which, with $1.53 billion in sales in the 10 months to October 2014, accounts for over 5% of global duty free sales.