Tourism is an important part of the Dubai government's strategy to maintain the flow of foreign cash into the emirate. Dubai's lure for tourists is based mainly on shopping, but also on its possession of other ancient and modern attractions. As of 2018, Dubai is the fourth most-visited city in the world based on the number of international visitors and the fastest growing, increasing by a 10.7% rate. The city hosted 14.9 million overnight visitors in 2016, and is expected to reach 20 million tourists by 2020.