Where does the police catch most people trying to actively or passively bribe them? Crime rate. Source: UNODC.
Free tip: Figure out the piece of continent and you're almost there.
Active bribery: "The promise, offering or giving, to a public official, directly or indirectly, of an undue advantage, for the official himself or herself or another person or entity, in order that the official act or refrain from acting in the exercise of his or her official duties."
Passive bribery: "The solicitation or acceptance by a public official, directly or indirectly, of an undue advantage, for the official himself or herself or another person or entity, in order that the official act or refrain from acting in the exercise of his or her official duties."