Most of foreign tourists to Slovenia come from the key European markets: Italy, Austria, Germany, Croatia, Benelux, Serbia, Russia and Ukraine, followed by UK and Ireland. European tourists create more than 90% of Slovenia's tourist income. In 2016, Slovenia was declared the world's first green country by the Netherlands-based organization Green Destinations. On being declared the most sustainable country in 2016, Slovenia had a big part to play at the ITB Berlin to promote sustainable tourism.