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President-elect Donald Trump told "60 Minutes" that he would decline a salary when he takes office in January. He said that he'd rather take a dollar every year instead of the $400,000 salary currently earned by Barack Obama. How does the U.S. presidential salary compare with other heads of state around the world?

Canadian prime minister Justin Trudeau earns $260,000 every year while Angela Merkel brings home $234,000. Interestingly, Trump isn't the first U.S. president to make the symbolic gesture of forgoing the job's salary. Herbert Hoover and John F Kennedy are two other notable examples. Away from politics, Facebook's Mark Zuckerberg and Google's Sergey Brin and Larry Page are also on a $1 salary.