The WTTC's annual City Travel & Tourism Economic Impact Report quantifies the economic contribution of Travel & Tourism in 73 cities around the world. This year’s edition also highlights successful initiatives, strategies and policies that have been implemented by cities. Over half (55%) of the world’s population lives in urban areas. Cities have become global economic hubs, driving growth and innovation, while attracting more and more people who come to live, do business and discover them. Not surprisingly, therefore, nearly half of global international travel takes place in cities.