Hope for Tourism: 5 centimeters Serbia
Once in a while I visit a big bookstore on Vienna's Mariahilfer Street. I usually check the language and the travel section. No increase in grammar books or learning material for Serbian, but a 100 % increase in travel guides: It's a long way from nothing to 7 centimeters. (Compare: 40 centimeters Slovenia)

Bosnia also increased from nothing to at least 4 centimeters.