In 1981, Sarajevo's GDP per capita was 133% of the Yugoslav average. Gross pay in Sarajevo in 2019 was or , while net salary was or . Tourism and recreation Sarajevo has a wide tourist industry and a fast expanding service sector thanks to the strong annual growth in tourist arrivals. Sarajevo also benefits from being both a summer and winter destination with continuity in its tourism throughout the year. The travel guide series, Lonely Planet named Sarajevo as the 43rd best city in the world, and in December 2009, listed Sarajevo as one of the top ten cities to visit in 2010. In 2019, 733,259 tourists visited Sarajevo, giving 1,667,545 overnight stays, which was 20% more than in 2018. Sports-related tourism uses the legacy facilities of the 1984 Winter Olympics, especially the skiing facilities on the nearby mountains of Bjelašnica, Igman, Jahorina, Trebević, and Treskavica. Sarajevo's 600 years of history, influenced by both Western and Eastern empires, makes it a tourist attraction with splendid variations. Sarajevo has hosted travellers for centuries, because it was an important trading center during the Ottoman and Austro-Hungarian empires and because it was a natural stop for many routes between East and West. Examples of popular destinations in Sarajevo include the Vrelo Bosne park, the Sarajevo cathedral, and the Gazi Husrev-beg Mosque. Tourism in Sarajevo is chiefly focused on historical, religious, cultural sites and winter sports. There are many parks throughout the city and on the outskirts. A popular activity among locals is street chess, usually played at Trg Oslobođenja - Alija Izetbegović. Veliki Park is the largest green area in the center of Sarajevo. It is nestled between Titova, Koševo, Džidžikovac, Tina Ujevića and Trampina Streets and in the lower part, there is a monument dedicated to the Children of Sarajevo. Hastahana is a popular place to relax in the Austro-Hungarian neighborhood of Marijin Dvor. Goat's Bridge, locally known as Kozija Ćuprija, in the Miljacka Canyon is also a popular park destination along the Dariva walkway and river Miljacka. On 24 December 2012, a park hosting two brass sculptures resembling two mourning mothers was dedicated as the Friendship Park, commemorating over 45 years of friendship between Sarajevo and Baku. Sarajevo is also famous for its city lookouts; including an observation deck on Avaz Twist Tower, Park Prinčeva restaurant, Vidikovac lookout (Mt. Trebević), Zmajevac lookout and Yellow/White fortresses lookouts (in Vratnik) as well as