Tourism is a crucial factor for a lot of economies and a main source of revenue for most countries around the world. Remarkable growth has been recorded in the tourism industry since 2017. According to a report released by the UN World Tourism Organization (UNWTO), international tourist arrivals worldwide increased by 7 percent in 2017. This result was the highest since a consistent percentage of around 4 percent was being recorded since 2010. In the first nine months of 2018, international tourist arrivals grew 5 percent year-on-year.