In 2016 "22% of Serbian citizens who had contact with public institutions included in research (traffic police, public health, educational system, courts - civil litigation, public services that issue official documents, departments responsible for social welfare), had paid bribe at least once in the previous year."
This would be not the first case where the rules are "bent" for the sake of Djokovic family: https://birn.rs/teniski-centar-novak-do-novih-kvadrata-uz-us... (unfortunately I couldn't find the source in English; in short, they got some premium Belgrade land, which was initially planned for a public park, for their tennis academy)
