Over the last 20 years, tourism has made a significant contribution to world growth. International tourism has been the fastest-growing component of tourism, although for many OECD countries it remains less important than domestic tourism. Tourism has been variably impacted by the financial and economic crisis that hit the world economy in 2008 and 2009. International tourism has been affected more than domestic tourism and business tourism more than leisure tourism. Over the last two decades, competition on tourism markets has sharpened with the emergence of new destinations. In this context, the results from OECD countries are impressive. OECD countries continue to play a predominant role in international tourism both for outbound and inbound flows. Tourism enterprises have contributed greatly to the overall employment increase in the OECD. Demand trends have been changing tourism, in particular, there is a tendency towards more frequent trips during the year, coupled with shorter individual stays.