How is the Danube exploited in Slovakia and how in Serbia

Slovakian capital, Bratislava, is yearly visited by 150000 tourists via the Danube. Budapest, Hungary, is visited by 400000 tourists in the same manner. Serbia has 6 times more of the Danube’s waterway, but 4 times less tourists. Have a look at the Milica Jevtic’s from RTS analysis, made in Slovakia. Cameraman was Dusan Zivkovic. (July 2016)